2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Rick Macklem at The University of Guelph.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * @(#)nfs_serv.c 8.8 (Berkeley) 7/31/95
37 * $FreeBSD: src/sys/nfs/nfs_serv.c,v 1.93.2.6 2002/12/29 18:19:53 dillon Exp $
38 * $DragonFly: src/sys/vfs/nfs/nfs_serv.c,v 1.48 2008/09/17 21:44:24 dillon Exp $
42 * nfs version 2 and 3 server calls to vnode ops
43 * - these routines generally have 3 phases
44 * 1 - break down and validate rpc request in mbuf list
45 * 2 - do the vnode ops for the request
46 * (surprisingly ?? many are very similar to syscalls in vfs_syscalls.c)
47 * 3 - build the rpc reply in an mbuf list
49 * - do not mix the phases, since the nfsm_?? macros can return failures
50 * on a bad rpc or similar and do not do any vrele() or vput()'s
52 * - the nfsm_reply() macro generates an nfs rpc reply with the nfs
53 * error number iff error != 0 whereas
54 * returning an error from the server function implies a fatal error
55 * such as a badly constructed rpc request that should be dropped without
57 * For Version 3, nfsm_reply() does not return for the error case, since
58 * most version 3 rpcs return more than the status for error cases.
61 * Warning: always pay careful attention to resource cleanup on return
62 * and note that nfsm_*() macros can terminate a procedure on certain
66 #include <sys/param.h>
67 #include <sys/systm.h>
70 #include <sys/nlookup.h>
71 #include <sys/namei.h>
72 #include <sys/unistd.h>
73 #include <sys/vnode.h>
74 #include <sys/mount.h>
75 #include <sys/socket.h>
76 #include <sys/socketvar.h>
77 #include <sys/malloc.h>
79 #include <sys/dirent.h>
81 #include <sys/kernel.h>
82 #include <sys/sysctl.h>
86 #include <vm/vm_extern.h>
87 #include <vm/vm_zone.h>
88 #include <vm/vm_object.h>
92 #include <sys/thread2.h>
98 #include "nfsm_subs.h"
101 #define nfsdbprintf(info) kprintf info
103 #define nfsdbprintf(info)
106 #define MAX_COMMIT_COUNT (1024 * 1024)
108 #define NUM_HEURISTIC 1017
109 #define NHUSE_INIT 64
111 #define NHUSE_MAX 2048
113 static struct nfsheur
{
114 struct vnode
*nh_vp
; /* vp to match (unreferenced pointer) */
115 off_t nh_nextr
; /* next offset for sequential detection */
116 int nh_use
; /* use count for selection */
117 int nh_seqcount
; /* heuristic */
118 } nfsheur
[NUM_HEURISTIC
];
120 nfstype nfsv3_type
[9] = { NFNON
, NFREG
, NFDIR
, NFBLK
, NFCHR
, NFLNK
, NFSOCK
,
123 nfstype nfsv2_type
[9] = { NFNON
, NFREG
, NFDIR
, NFBLK
, NFCHR
, NFLNK
, NFNON
,
126 int nfsrvw_procrastinate
= NFS_GATHERDELAY
* 1000;
127 int nfsrvw_procrastinate_v3
= 0;
129 static struct timespec nfsver
;
131 SYSCTL_DECL(_vfs_nfs
);
134 SYSCTL_INT(_vfs_nfs
, OID_AUTO
, async
, CTLFLAG_RW
, &nfs_async
, 0, "");
135 static int nfs_commit_blks
;
136 static int nfs_commit_miss
;
137 SYSCTL_INT(_vfs_nfs
, OID_AUTO
, commit_blks
, CTLFLAG_RW
, &nfs_commit_blks
, 0, "");
138 SYSCTL_INT(_vfs_nfs
, OID_AUTO
, commit_miss
, CTLFLAG_RW
, &nfs_commit_miss
, 0, "");
140 static int nfsrv_access (struct mount
*, struct vnode
*, int,
141 struct ucred
*, int, struct thread
*, int);
142 static void nfsrvw_coalesce (struct nfsrv_descript
*,
143 struct nfsrv_descript
*);
146 * nfs v3 access service
149 nfsrv3_access(struct nfsrv_descript
*nfsd
, struct nfssvc_sock
*slp
,
150 struct thread
*td
, struct mbuf
**mrq
)
152 struct sockaddr
*nam
= nfsd
->nd_nam
;
153 struct ucred
*cred
= &nfsd
->nd_cr
;
154 struct vnode
*vp
= NULL
;
155 struct mount
*mp
= NULL
;
158 int error
= 0, rdonly
, getret
;
159 struct vattr vattr
, *vap
= &vattr
;
160 u_long testmode
, nfsmode
;
161 struct nfsm_info info
;
164 info
.dpos
= nfsd
->nd_dpos
;
165 info
.md
= nfsd
->nd_md
;
166 info
.mrep
= nfsd
->nd_mrep
;
169 nfsdbprintf(("%s %d\n", __FILE__
, __LINE__
));
170 fhp
= &nfh
.fh_generic
;
171 NEGREPLYOUT(nfsm_srvmtofh(&info
, nfsd
, fhp
, &error
));
172 NULLOUT(tl
= nfsm_dissect(&info
, NFSX_UNSIGNED
));
173 error
= nfsrv_fhtovp(fhp
, 1, &mp
, &vp
, cred
, slp
, nam
, &rdonly
,
174 (nfsd
->nd_flag
& ND_KERBAUTH
), TRUE
);
176 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
, NFSX_UNSIGNED
, &error
));
177 nfsm_srvpostop_attr(&info
, nfsd
, 1, NULL
);
181 nfsmode
= fxdr_unsigned(u_int32_t
, *tl
);
182 if ((nfsmode
& NFSV3ACCESS_READ
) &&
183 nfsrv_access(mp
, vp
, VREAD
, cred
, rdonly
, td
, 0))
184 nfsmode
&= ~NFSV3ACCESS_READ
;
185 if (vp
->v_type
== VDIR
)
186 testmode
= (NFSV3ACCESS_MODIFY
| NFSV3ACCESS_EXTEND
|
189 testmode
= (NFSV3ACCESS_MODIFY
| NFSV3ACCESS_EXTEND
);
190 if ((nfsmode
& testmode
) &&
191 nfsrv_access(mp
, vp
, VWRITE
, cred
, rdonly
, td
, 0))
192 nfsmode
&= ~testmode
;
193 if (vp
->v_type
== VDIR
)
194 testmode
= NFSV3ACCESS_LOOKUP
;
196 testmode
= NFSV3ACCESS_EXECUTE
;
197 if ((nfsmode
& testmode
) &&
198 nfsrv_access(mp
, vp
, VEXEC
, cred
, rdonly
, td
, 0))
199 nfsmode
&= ~testmode
;
200 getret
= VOP_GETATTR(vp
, vap
);
203 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
204 NFSX_POSTOPATTR(1) + NFSX_UNSIGNED
, &error
));
205 nfsm_srvpostop_attr(&info
, nfsd
, getret
, vap
);
206 tl
= nfsm_build(&info
, NFSX_UNSIGNED
);
207 *tl
= txdr_unsigned(nfsmode
);
216 * nfs getattr service
219 nfsrv_getattr(struct nfsrv_descript
*nfsd
, struct nfssvc_sock
*slp
,
220 struct thread
*td
, struct mbuf
**mrq
)
222 struct sockaddr
*nam
= nfsd
->nd_nam
;
223 struct ucred
*cred
= &nfsd
->nd_cr
;
224 struct nfs_fattr
*fp
;
226 struct vattr
*vap
= &va
;
227 struct vnode
*vp
= NULL
;
228 struct mount
*mp
= NULL
;
231 int error
= 0, rdonly
;
232 struct nfsm_info info
;
234 info
.mrep
= nfsd
->nd_mrep
;
235 info
.md
= nfsd
->nd_md
;
236 info
.dpos
= nfsd
->nd_dpos
;
239 nfsdbprintf(("%s %d\n", __FILE__
, __LINE__
));
240 fhp
= &nfh
.fh_generic
;
241 NEGREPLYOUT(nfsm_srvmtofh(&info
, nfsd
, fhp
, &error
));
242 error
= nfsrv_fhtovp(fhp
, 1, &mp
, &vp
, cred
, slp
, nam
,
243 &rdonly
, (nfsd
->nd_flag
& ND_KERBAUTH
), TRUE
);
245 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
, 0, &error
));
249 error
= VOP_GETATTR(vp
, vap
);
252 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
253 NFSX_FATTR(nfsd
->nd_flag
& ND_NFSV3
), &error
));
258 fp
= nfsm_build(&info
, NFSX_FATTR(nfsd
->nd_flag
& ND_NFSV3
));
259 nfsm_srvfattr(nfsd
, vap
, fp
);
270 * nfs setattr service
273 nfsrv_setattr(struct nfsrv_descript
*nfsd
, struct nfssvc_sock
*slp
,
274 struct thread
*td
, struct mbuf
**mrq
)
276 struct sockaddr
*nam
= nfsd
->nd_nam
;
277 struct ucred
*cred
= &nfsd
->nd_cr
;
278 struct vattr va
, preat
;
279 struct vattr
*vap
= &va
;
280 struct nfsv2_sattr
*sp
;
281 struct nfs_fattr
*fp
;
282 struct vnode
*vp
= NULL
;
283 struct mount
*mp
= NULL
;
287 int error
= 0, rdonly
, preat_ret
= 1, postat_ret
= 1;
289 struct timespec guard
;
290 struct nfsm_info info
;
292 info
.mrep
= nfsd
->nd_mrep
;
294 info
.md
= nfsd
->nd_md
;
295 info
.dpos
= nfsd
->nd_dpos
;
296 info
.v3
= (nfsd
->nd_flag
& ND_NFSV3
);
298 guard
.tv_sec
= 0; /* fix compiler warning */
301 nfsdbprintf(("%s %d\n", __FILE__
, __LINE__
));
302 fhp
= &nfh
.fh_generic
;
303 NEGREPLYOUT(nfsm_srvmtofh(&info
, nfsd
, fhp
, &error
));
306 ERROROUT(nfsm_srvsattr(&info
, vap
));
307 NULLOUT(tl
= nfsm_dissect(&info
, NFSX_UNSIGNED
));
308 gcheck
= fxdr_unsigned(int, *tl
);
310 NULLOUT(tl
= nfsm_dissect(&info
, 2 * NFSX_UNSIGNED
));
311 fxdr_nfsv3time(tl
, &guard
);
314 NULLOUT(sp
= nfsm_dissect(&info
, NFSX_V2SATTR
));
316 * Nah nah nah nah na nah
317 * There is a bug in the Sun client that puts 0xffff in the mode
318 * field of sattr when it should put in 0xffffffff. The u_short
319 * doesn't sign extend.
320 * --> check the low order 2 bytes for 0xffff
322 if ((fxdr_unsigned(int, sp
->sa_mode
) & 0xffff) != 0xffff)
323 vap
->va_mode
= nfstov_mode(sp
->sa_mode
);
324 if (sp
->sa_uid
!= nfs_xdrneg1
)
325 vap
->va_uid
= fxdr_unsigned(uid_t
, sp
->sa_uid
);
326 if (sp
->sa_gid
!= nfs_xdrneg1
)
327 vap
->va_gid
= fxdr_unsigned(gid_t
, sp
->sa_gid
);
328 if (sp
->sa_size
!= nfs_xdrneg1
)
329 vap
->va_size
= fxdr_unsigned(u_quad_t
, sp
->sa_size
);
330 if (sp
->sa_atime
.nfsv2_sec
!= nfs_xdrneg1
) {
332 fxdr_nfsv2time(&sp
->sa_atime
, &vap
->va_atime
);
334 vap
->va_atime
.tv_sec
=
335 fxdr_unsigned(int32_t, sp
->sa_atime
.nfsv2_sec
);
336 vap
->va_atime
.tv_nsec
= 0;
339 if (sp
->sa_mtime
.nfsv2_sec
!= nfs_xdrneg1
)
340 fxdr_nfsv2time(&sp
->sa_mtime
, &vap
->va_mtime
);
345 * Now that we have all the fields, lets do it.
347 error
= nfsrv_fhtovp(fhp
, 1, &mp
, &vp
, cred
, slp
, nam
, &rdonly
,
348 (nfsd
->nd_flag
& ND_KERBAUTH
), TRUE
);
350 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
351 2 * NFSX_UNSIGNED
, &error
));
352 nfsm_srvwcc_data(&info
, nfsd
, preat_ret
, &preat
,
359 * vp now an active resource, pay careful attention to cleanup
363 error
= preat_ret
= VOP_GETATTR(vp
, &preat
);
364 if (!error
&& gcheck
&&
365 (preat
.va_ctime
.tv_sec
!= guard
.tv_sec
||
366 preat
.va_ctime
.tv_nsec
!= guard
.tv_nsec
))
367 error
= NFSERR_NOT_SYNC
;
371 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
372 NFSX_WCCDATA(info
.v3
), &error
));
373 nfsm_srvwcc_data(&info
, nfsd
, preat_ret
, &preat
,
381 * If the size is being changed write acces is required, otherwise
382 * just check for a read only file system.
384 if (vap
->va_size
== ((u_quad_t
)((quad_t
) -1))) {
385 if (rdonly
|| (mp
->mnt_flag
& MNT_RDONLY
)) {
390 if (vp
->v_type
== VDIR
) {
393 } else if ((error
= nfsrv_access(mp
, vp
, VWRITE
, cred
, rdonly
,
398 error
= VOP_SETATTR(vp
, vap
, cred
);
399 postat_ret
= VOP_GETATTR(vp
, vap
);
405 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
406 NFSX_WCCORFATTR(info
.v3
), &error
));
408 nfsm_srvwcc_data(&info
, nfsd
, preat_ret
, &preat
,
413 fp
= nfsm_build(&info
, NFSX_V2FATTR
);
414 nfsm_srvfattr(nfsd
, vap
, fp
);
429 nfsrv_lookup(struct nfsrv_descript
*nfsd
, struct nfssvc_sock
*slp
,
430 struct thread
*td
, struct mbuf
**mrq
)
432 struct sockaddr
*nam
= nfsd
->nd_nam
;
433 struct ucred
*cred
= &nfsd
->nd_cr
;
434 struct nfs_fattr
*fp
;
435 struct nlookupdata nd
;
441 int error
= 0, len
, dirattr_ret
= 1;
443 struct vattr va
, dirattr
, *vap
= &va
;
444 struct nfsm_info info
;
446 info
.mrep
= nfsd
->nd_mrep
;
448 info
.md
= nfsd
->nd_md
;
449 info
.dpos
= nfsd
->nd_dpos
;
450 info
.v3
= (nfsd
->nd_flag
& ND_NFSV3
);
452 nfsdbprintf(("%s %d\n", __FILE__
, __LINE__
));
457 fhp
= &nfh
.fh_generic
;
458 NEGREPLYOUT(nfsm_srvmtofh(&info
, nfsd
, fhp
, &error
));
459 NEGREPLYOUT(len
= nfsm_srvnamesiz(&info
, &error
));
461 pubflag
= nfs_ispublicfh(fhp
);
463 error
= nfs_namei(&nd
, cred
, 0, NULL
, &vp
,
464 fhp
, len
, slp
, nam
, &info
.md
, &info
.dpos
,
465 &dirp
, td
, (nfsd
->nd_flag
& ND_KERBAUTH
), pubflag
);
468 * namei failure, only dirp to cleanup. Clear out garbarge from
469 * structure in case macros jump to nfsmout.
475 dirattr_ret
= VOP_GETATTR(dirp
, &dirattr
);
479 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
480 NFSX_POSTOPATTR(info
.v3
), &error
));
481 nfsm_srvpostop_attr(&info
, nfsd
, dirattr_ret
, &dirattr
);
487 * Locate index file for public filehandle
489 * error is 0 on entry and 0 on exit from this block.
493 if (vp
->v_type
== VDIR
&& nfs_pub
.np_index
!= NULL
) {
495 * Setup call to lookup() to see if we can find
496 * the index file. Arguably, this doesn't belong
497 * in a kernel.. Ugh. If an error occurs, do not
498 * try to install an index file and then clear the
501 * When we replace nd with ind and redirect ndp,
502 * maintenance of ni_startdir and ni_vp shift to
503 * ind and we have to clean them up in the old nd.
504 * However, the cnd resource continues to be maintained
505 * via the original nd. Confused? You aren't alone!
508 cache_copy(&nd
.nl_nch
, &nch
);
510 error
= nlookup_init_raw(&nd
, nfs_pub
.np_index
,
511 UIO_SYSSPACE
, 0, cred
, &nch
);
514 error
= nlookup(&nd
);
518 * Found an index file. Get rid of
519 * the old references. transfer vp and
520 * load up the new vp. Fortunately we do
521 * not have to deal with dvp, that would be
528 error
= cache_vget(&nd
.nl_nch
, nd
.nl_cred
,
530 KKASSERT(error
== 0);
535 * If the public filehandle was used, check that this lookup
536 * didn't result in a filehandle outside the publicly exported
537 * filesystem. We clear the poor vp here to avoid lockups due
541 if (vp
->v_mount
!= nfs_pub
.np_mount
) {
550 dirattr_ret
= VOP_GETATTR(dirp
, &dirattr
);
556 * Resources at this point:
557 * ndp->ni_vp may not be NULL
562 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
563 NFSX_POSTOPATTR(info
.v3
), &error
));
564 nfsm_srvpostop_attr(&info
, nfsd
, dirattr_ret
, &dirattr
);
570 * Clear out some resources prior to potentially blocking. This
571 * is not as critical as ni_dvp resources in other routines, but
577 * Get underlying attribute, then release remaining resources ( for
578 * the same potential blocking reason ) and reply.
580 bzero(&fhp
->fh_fid
, sizeof(fhp
->fh_fid
));
581 error
= VFS_VPTOFH(vp
, &fhp
->fh_fid
);
583 error
= VOP_GETATTR(vp
, vap
);
587 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
588 NFSX_SRVFH(info
.v3
) +
589 NFSX_POSTOPORFATTR(info
.v3
) +
590 NFSX_POSTOPATTR(info
.v3
),
593 nfsm_srvpostop_attr(&info
, nfsd
, dirattr_ret
, &dirattr
);
597 nfsm_srvfhtom(&info
, fhp
);
599 nfsm_srvpostop_attr(&info
, nfsd
, 0, vap
);
600 nfsm_srvpostop_attr(&info
, nfsd
, dirattr_ret
, &dirattr
);
602 fp
= nfsm_build(&info
, NFSX_V2FATTR
);
603 nfsm_srvfattr(nfsd
, vap
, fp
);
610 nlookup_done(&nd
); /* may be called twice */
617 * nfs readlink service
620 nfsrv_readlink(struct nfsrv_descript
*nfsd
, struct nfssvc_sock
*slp
,
621 struct thread
*td
, struct mbuf
**mrq
)
623 struct sockaddr
*nam
= nfsd
->nd_nam
;
624 struct ucred
*cred
= &nfsd
->nd_cr
;
625 struct iovec iv
[(NFS_MAXPATHLEN
+MLEN
-1)/MLEN
];
626 struct iovec
*ivp
= iv
;
628 int error
= 0, rdonly
, i
, tlen
, len
, getret
;
629 struct mbuf
*mp1
, *mp2
, *mp3
;
630 struct vnode
*vp
= NULL
;
631 struct mount
*mp
= NULL
;
635 struct uio io
, *uiop
= &io
;
636 struct nfsm_info info
;
638 info
.mrep
= nfsd
->nd_mrep
;
640 info
.md
= nfsd
->nd_md
;
641 info
.dpos
= nfsd
->nd_dpos
;
642 info
.v3
= (nfsd
->nd_flag
& ND_NFSV3
);
644 nfsdbprintf(("%s %d\n", __FILE__
, __LINE__
));
649 fhp
= &nfh
.fh_generic
;
650 NEGREPLYOUT(nfsm_srvmtofh(&info
, nfsd
, fhp
, &error
));
653 while (len
< NFS_MAXPATHLEN
) {
654 mp1
= m_getcl(MB_WAIT
, MT_DATA
, 0);
655 mp1
->m_len
= MCLBYTES
;
662 if ((len
+ mp1
->m_len
) > NFS_MAXPATHLEN
) {
663 mp1
->m_len
= NFS_MAXPATHLEN
-len
;
664 len
= NFS_MAXPATHLEN
;
667 ivp
->iov_base
= mtod(mp1
, caddr_t
);
668 ivp
->iov_len
= mp1
->m_len
;
673 uiop
->uio_iovcnt
= i
;
674 uiop
->uio_offset
= 0;
675 uiop
->uio_resid
= len
;
676 uiop
->uio_rw
= UIO_READ
;
677 uiop
->uio_segflg
= UIO_SYSSPACE
;
679 error
= nfsrv_fhtovp(fhp
, 1, &mp
, &vp
, cred
, slp
, nam
,
680 &rdonly
, (nfsd
->nd_flag
& ND_KERBAUTH
), TRUE
);
682 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
683 2 * NFSX_UNSIGNED
, &error
));
684 nfsm_srvpostop_attr(&info
, nfsd
, 1, NULL
);
688 if (vp
->v_type
!= VLNK
) {
695 error
= VOP_READLINK(vp
, uiop
, cred
);
697 getret
= VOP_GETATTR(vp
, &attr
);
700 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
701 NFSX_POSTOPATTR(info
.v3
) + NFSX_UNSIGNED
,
704 nfsm_srvpostop_attr(&info
, nfsd
, getret
, &attr
);
710 if (uiop
->uio_resid
> 0) {
711 len
-= uiop
->uio_resid
;
712 tlen
= nfsm_rndup(len
);
713 nfsm_adj(mp3
, NFS_MAXPATHLEN
-tlen
, tlen
-len
);
715 tl
= nfsm_build(&info
, NFSX_UNSIGNED
);
716 *tl
= txdr_unsigned(len
);
717 info
.mb
->m_next
= mp3
;
732 nfsrv_read(struct nfsrv_descript
*nfsd
, struct nfssvc_sock
*slp
,
733 struct thread
*td
, struct mbuf
**mrq
)
735 struct nfsm_info info
;
736 struct sockaddr
*nam
= nfsd
->nd_nam
;
737 struct ucred
*cred
= &nfsd
->nd_cr
;
741 struct nfs_fattr
*fp
;
745 int error
= 0, rdonly
, cnt
, len
, left
, siz
, tlen
, getret
;
747 struct vnode
*vp
= NULL
;
748 struct mount
*mp
= NULL
;
751 struct uio io
, *uiop
= &io
;
752 struct vattr va
, *vap
= &va
;
757 info
.mrep
= nfsd
->nd_mrep
;
759 info
.md
= nfsd
->nd_md
;
760 info
.dpos
= nfsd
->nd_dpos
;
761 info
.v3
= (nfsd
->nd_flag
& ND_NFSV3
);
763 nfsdbprintf(("%s %d\n", __FILE__
, __LINE__
));
764 fhp
= &nfh
.fh_generic
;
765 NEGREPLYOUT(nfsm_srvmtofh(&info
, nfsd
, fhp
, &error
));
767 NULLOUT(tl
= nfsm_dissect(&info
, 2 * NFSX_UNSIGNED
));
768 off
= fxdr_hyper(tl
);
770 NULLOUT(tl
= nfsm_dissect(&info
, NFSX_UNSIGNED
));
771 off
= (off_t
)fxdr_unsigned(u_int32_t
, *tl
);
773 NEGREPLYOUT(reqlen
= nfsm_srvstrsiz(&info
,
774 NFS_SRVMAXDATA(nfsd
), &error
));
777 * Reference vp. If an error occurs, vp will be invalid, but we
778 * have to NULL it just in case. The macros might goto nfsmout
782 error
= nfsrv_fhtovp(fhp
, 1, &mp
, &vp
, cred
, slp
, nam
,
783 &rdonly
, (nfsd
->nd_flag
& ND_KERBAUTH
), TRUE
);
786 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
787 2 * NFSX_UNSIGNED
, &error
));
788 nfsm_srvpostop_attr(&info
, nfsd
, 1, NULL
);
793 if (vp
->v_type
!= VREG
) {
797 error
= (vp
->v_type
== VDIR
) ? EISDIR
: EACCES
;
800 if ((error
= nfsrv_access(mp
, vp
, VREAD
, cred
, rdonly
, td
, 1)) != 0)
801 error
= nfsrv_access(mp
, vp
, VEXEC
, cred
, rdonly
, td
, 1);
803 getret
= VOP_GETATTR(vp
, vap
);
809 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
810 NFSX_POSTOPATTR(info
.v3
), &error
));
811 nfsm_srvpostop_attr(&info
, nfsd
, getret
, vap
);
817 * Calculate byte count to read
820 if (off
>= vap
->va_size
)
822 else if ((off
+ reqlen
) > vap
->va_size
)
823 cnt
= vap
->va_size
- off
;
828 * Calculate seqcount for heuristic
836 * Locate best candidate
839 hi
= ((int)(vm_offset_t
)vp
/ sizeof(struct vnode
)) % NUM_HEURISTIC
;
843 if (nfsheur
[hi
].nh_vp
== vp
) {
847 if (nfsheur
[hi
].nh_use
> 0)
848 --nfsheur
[hi
].nh_use
;
849 hi
= (hi
+ 1) % NUM_HEURISTIC
;
850 if (nfsheur
[hi
].nh_use
< nh
->nh_use
)
854 if (nh
->nh_vp
!= vp
) {
857 nh
->nh_use
= NHUSE_INIT
;
865 * Calculate heuristic
868 if ((off
== 0 && nh
->nh_seqcount
> 0) || off
== nh
->nh_nextr
) {
869 if (++nh
->nh_seqcount
> IO_SEQMAX
)
870 nh
->nh_seqcount
= IO_SEQMAX
;
871 } else if (nh
->nh_seqcount
> 1) {
876 nh
->nh_use
+= NHUSE_INC
;
877 if (nh
->nh_use
> NHUSE_MAX
)
878 nh
->nh_use
= NHUSE_MAX
;
879 ioflag
|= nh
->nh_seqcount
<< IO_SEQSHIFT
;
882 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
883 NFSX_POSTOPORFATTR(info
.v3
) +
884 3 * NFSX_UNSIGNED
+ nfsm_rndup(cnt
),
887 tl
= nfsm_build(&info
, NFSX_V3FATTR
+ 4 * NFSX_UNSIGNED
);
889 fp
= (struct nfs_fattr
*)tl
;
890 tl
+= (NFSX_V3FATTR
/ sizeof (u_int32_t
));
892 tl
= nfsm_build(&info
, NFSX_V2FATTR
+ NFSX_UNSIGNED
);
893 fp
= (struct nfs_fattr
*)tl
;
894 tl
+= (NFSX_V2FATTR
/ sizeof (u_int32_t
));
896 len
= left
= nfsm_rndup(cnt
);
899 * Generate the mbuf list with the uio_iov ref. to it.
904 siz
= min(M_TRAILINGSPACE(m
), left
);
910 m
= m_getcl(MB_WAIT
, MT_DATA
, 0);
916 MALLOC(iv
, struct iovec
*, i
* sizeof (struct iovec
),
918 uiop
->uio_iov
= iv2
= iv
;
924 panic("nfsrv_read iov");
925 siz
= min(M_TRAILINGSPACE(m
), left
);
927 iv
->iov_base
= mtod(m
, caddr_t
) + m
->m_len
;
936 uiop
->uio_iovcnt
= i
;
937 uiop
->uio_offset
= off
;
938 uiop
->uio_resid
= len
;
939 uiop
->uio_rw
= UIO_READ
;
940 uiop
->uio_segflg
= UIO_SYSSPACE
;
941 error
= VOP_READ(vp
, uiop
, IO_NODELOCKED
| ioflag
, cred
);
942 off
= uiop
->uio_offset
;
944 FREE((caddr_t
)iv2
, M_TEMP
);
945 if (error
|| (getret
= VOP_GETATTR(vp
, vap
))) {
952 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
953 NFSX_POSTOPATTR(info
.v3
),
955 nfsm_srvpostop_attr(&info
, nfsd
, getret
, vap
);
964 nfsm_srvfattr(nfsd
, vap
, fp
);
965 tlen
= len
- uiop
->uio_resid
;
966 cnt
= cnt
< tlen
? cnt
: tlen
;
967 tlen
= nfsm_rndup(cnt
);
968 if (len
!= tlen
|| tlen
!= cnt
)
969 nfsm_adj(info
.mb
, len
- tlen
, tlen
- cnt
);
971 *tl
++ = txdr_unsigned(cnt
);
977 *tl
= txdr_unsigned(cnt
);
989 nfsrv_write(struct nfsrv_descript
*nfsd
, struct nfssvc_sock
*slp
,
990 struct thread
*td
, struct mbuf
**mrq
)
992 struct sockaddr
*nam
= nfsd
->nd_nam
;
993 struct ucred
*cred
= &nfsd
->nd_cr
;
997 struct nfs_fattr
*fp
;
999 struct vattr va
, forat
;
1000 struct vattr
*vap
= &va
;
1002 int error
= 0, rdonly
, len
, forat_ret
= 1;
1003 int ioflags
, aftat_ret
= 1, retlen
, zeroing
, adjust
;
1004 int stable
= NFSV3WRITE_FILESYNC
;
1005 struct vnode
*vp
= NULL
;
1006 struct mount
*mp
= NULL
;
1009 struct uio io
, *uiop
= &io
;
1010 struct nfsm_info info
;
1013 info
.mrep
= nfsd
->nd_mrep
;
1015 info
.md
= nfsd
->nd_md
;
1016 info
.dpos
= nfsd
->nd_dpos
;
1017 info
.v3
= (nfsd
->nd_flag
& ND_NFSV3
);
1019 nfsdbprintf(("%s %d\n", __FILE__
, __LINE__
));
1020 if (info
.mrep
== NULL
) {
1024 fhp
= &nfh
.fh_generic
;
1025 NEGREPLYOUT(nfsm_srvmtofh(&info
, nfsd
, fhp
, &error
));
1027 NULLOUT(tl
= nfsm_dissect(&info
, 5 * NFSX_UNSIGNED
));
1028 off
= fxdr_hyper(tl
);
1030 stable
= fxdr_unsigned(int, *tl
++);
1032 NULLOUT(tl
= nfsm_dissect(&info
, 4 * NFSX_UNSIGNED
));
1033 off
= (off_t
)fxdr_unsigned(u_int32_t
, *++tl
);
1036 stable
= NFSV3WRITE_UNSTABLE
;
1038 retlen
= len
= fxdr_unsigned(int32_t, *tl
);
1042 * For NFS Version 2, it is not obvious what a write of zero length
1043 * should do, but I might as well be consistent with Version 3,
1044 * which is to return ok so long as there are no permission problems.
1050 if (mp1
== info
.md
) {
1052 adjust
= info
.dpos
- mtod(mp1
, caddr_t
);
1053 mp1
->m_len
-= adjust
;
1054 if (mp1
->m_len
> 0 && adjust
> 0)
1055 mp1
->m_data
+= adjust
;
1059 else if (mp1
->m_len
> 0) {
1062 mp1
->m_len
-= (i
- len
);
1071 if (len
> NFS_MAXDATA
|| len
< 0 || i
< len
) {
1073 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
1074 2 * NFSX_UNSIGNED
, &error
));
1075 nfsm_srvwcc_data(&info
, nfsd
, forat_ret
, &forat
,
1080 error
= nfsrv_fhtovp(fhp
, 1, &mp
, &vp
, cred
, slp
, nam
,
1081 &rdonly
, (nfsd
->nd_flag
& ND_KERBAUTH
), TRUE
);
1084 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
1085 2 * NFSX_UNSIGNED
, &error
));
1086 nfsm_srvwcc_data(&info
, nfsd
, forat_ret
, &forat
,
1092 forat_ret
= VOP_GETATTR(vp
, &forat
);
1093 if (vp
->v_type
!= VREG
) {
1097 error
= (vp
->v_type
== VDIR
) ? EISDIR
: EACCES
;
1100 error
= nfsrv_access(mp
, vp
, VWRITE
, cred
, rdonly
, td
, 1);
1105 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
1106 NFSX_WCCDATA(info
.v3
), &error
));
1107 nfsm_srvwcc_data(&info
, nfsd
, forat_ret
, &forat
,
1114 MALLOC(ivp
, struct iovec
*, cnt
* sizeof (struct iovec
), M_TEMP
,
1116 uiop
->uio_iov
= iv
= ivp
;
1117 uiop
->uio_iovcnt
= cnt
;
1120 if (mp1
->m_len
> 0) {
1121 ivp
->iov_base
= mtod(mp1
, caddr_t
);
1122 ivp
->iov_len
= mp1
->m_len
;
1130 * The IO_METASYNC flag indicates that all metadata (and not just
1131 * enough to ensure data integrity) mus be written to stable storage
1133 * (IO_METASYNC is not yet implemented in 4.4BSD-Lite.)
1135 if (stable
== NFSV3WRITE_UNSTABLE
)
1136 ioflags
= IO_NODELOCKED
;
1137 else if (stable
== NFSV3WRITE_DATASYNC
)
1138 ioflags
= (IO_SYNC
| IO_NODELOCKED
);
1140 ioflags
= (IO_METASYNC
| IO_SYNC
| IO_NODELOCKED
);
1141 uiop
->uio_resid
= len
;
1142 uiop
->uio_rw
= UIO_WRITE
;
1143 uiop
->uio_segflg
= UIO_SYSSPACE
;
1144 uiop
->uio_td
= NULL
;
1145 uiop
->uio_offset
= off
;
1146 error
= VOP_WRITE(vp
, uiop
, ioflags
, cred
);
1147 nfsstats
.srvvop_writes
++;
1148 FREE((caddr_t
)iv
, M_TEMP
);
1150 aftat_ret
= VOP_GETATTR(vp
, vap
);
1155 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
1156 NFSX_PREOPATTR(info
.v3
) +
1157 NFSX_POSTOPORFATTR(info
.v3
) +
1158 2 * NFSX_UNSIGNED
+ NFSX_WRITEVERF(info
.v3
),
1161 nfsm_srvwcc_data(&info
, nfsd
, forat_ret
, &forat
,
1167 tl
= nfsm_build(&info
, 4 * NFSX_UNSIGNED
);
1168 *tl
++ = txdr_unsigned(retlen
);
1170 * If nfs_async is set, then pretend the write was FILESYNC.
1172 if (stable
== NFSV3WRITE_UNSTABLE
&& !nfs_async
)
1173 *tl
++ = txdr_unsigned(stable
);
1175 *tl
++ = txdr_unsigned(NFSV3WRITE_FILESYNC
);
1177 * Actually, there is no need to txdr these fields,
1178 * but it may make the values more human readable,
1179 * for debugging purposes.
1181 if (nfsver
.tv_sec
== 0)
1183 *tl
++ = txdr_unsigned(nfsver
.tv_sec
);
1184 *tl
= txdr_unsigned(nfsver
.tv_nsec
/ 1000);
1186 fp
= nfsm_build(&info
, NFSX_V2FATTR
);
1187 nfsm_srvfattr(nfsd
, vap
, fp
);
1197 * NFS write service with write gathering support. Called when
1198 * nfsrvw_procrastinate > 0.
1199 * See: Chet Juszczak, "Improving the Write Performance of an NFS Server",
1200 * in Proc. of the Winter 1994 Usenix Conference, pg. 247-259, San Franscisco,
1204 nfsrv_writegather(struct nfsrv_descript
**ndp
, struct nfssvc_sock
*slp
,
1205 struct thread
*td
, struct mbuf
**mrq
)
1208 struct nfsrv_descript
*wp
, *nfsd
, *owp
, *swp
;
1209 struct nfs_fattr
*fp
;
1212 struct nfsrvw_delayhash
*wpp
;
1214 struct vattr va
, forat
;
1216 int error
= 0, rdonly
, len
, forat_ret
= 1;
1217 int ioflags
, aftat_ret
= 1, adjust
, zeroing
;
1219 struct vnode
*vp
= NULL
;
1220 struct mount
*mp
= NULL
;
1221 struct uio io
, *uiop
= &io
;
1223 struct nfsm_info info
;
1227 nfsdbprintf(("%s %d\n", __FILE__
, __LINE__
));
1236 info
.mrep
= nfsd
->nd_mrep
;
1238 info
.md
= nfsd
->nd_md
;
1239 info
.dpos
= nfsd
->nd_dpos
;
1240 info
.v3
= (nfsd
->nd_flag
& ND_NFSV3
);
1241 cred
= &nfsd
->nd_cr
;
1242 LIST_INIT(&nfsd
->nd_coalesce
);
1243 nfsd
->nd_mreq
= NULL
;
1244 nfsd
->nd_stable
= NFSV3WRITE_FILESYNC
;
1245 cur_usec
= nfs_curusec();
1246 nfsd
->nd_time
= cur_usec
+
1247 (info
.v3
? nfsrvw_procrastinate_v3
: nfsrvw_procrastinate
);
1250 * Now, get the write header..
1252 NEGREPLYOUT(nfsm_srvmtofh(&info
, nfsd
, &nfsd
->nd_fh
, &error
));
1254 NULLOUT(tl
= nfsm_dissect(&info
, 5 * NFSX_UNSIGNED
));
1255 nfsd
->nd_off
= fxdr_hyper(tl
);
1257 nfsd
->nd_stable
= fxdr_unsigned(int, *tl
++);
1259 NULLOUT(tl
= nfsm_dissect(&info
, 4 * NFSX_UNSIGNED
));
1260 nfsd
->nd_off
= (off_t
)fxdr_unsigned(u_int32_t
, *++tl
);
1263 nfsd
->nd_stable
= NFSV3WRITE_UNSTABLE
;
1265 len
= fxdr_unsigned(int32_t, *tl
);
1267 nfsd
->nd_eoff
= nfsd
->nd_off
+ len
;
1270 * Trim the header out of the mbuf list and trim off any trailing
1271 * junk so that the mbuf list has only the write data.
1277 if (mp1
== info
.md
) {
1279 adjust
= info
.dpos
- mtod(mp1
, caddr_t
);
1280 mp1
->m_len
-= adjust
;
1281 if (mp1
->m_len
> 0 && adjust
> 0)
1282 mp1
->m_data
+= adjust
;
1289 mp1
->m_len
-= (i
- len
);
1295 if (len
> NFS_MAXDATA
|| len
< 0 || i
< len
) {
1300 nfsm_writereply(&info
, nfsd
, slp
, error
, 2 * NFSX_UNSIGNED
);
1302 nfsm_srvwcc_data(&info
, nfsd
, forat_ret
, &forat
,
1305 nfsd
->nd_mreq
= info
.mreq
;
1306 nfsd
->nd_mrep
= NULL
;
1311 * Add this entry to the hash and time queues.
1315 wp
= slp
->ns_tq
.lh_first
;
1316 while (wp
&& wp
->nd_time
< nfsd
->nd_time
) {
1318 wp
= wp
->nd_tq
.le_next
;
1320 NFS_DPF(WG
, ("Q%03x", nfsd
->nd_retxid
& 0xfff));
1322 LIST_INSERT_AFTER(owp
, nfsd
, nd_tq
);
1324 LIST_INSERT_HEAD(&slp
->ns_tq
, nfsd
, nd_tq
);
1326 if (nfsd
->nd_mrep
) {
1327 wpp
= NWDELAYHASH(slp
, nfsd
->nd_fh
.fh_fid
.fid_data
);
1331 bcmp((caddr_t
)&nfsd
->nd_fh
,(caddr_t
)&wp
->nd_fh
,NFSX_V3FH
)) {
1333 wp
= wp
->nd_hash
.le_next
;
1335 while (wp
&& wp
->nd_off
< nfsd
->nd_off
&&
1336 !bcmp((caddr_t
)&nfsd
->nd_fh
,(caddr_t
)&wp
->nd_fh
,NFSX_V3FH
)) {
1338 wp
= wp
->nd_hash
.le_next
;
1341 LIST_INSERT_AFTER(owp
, nfsd
, nd_hash
);
1344 * Search the hash list for overlapping entries and
1347 for(; nfsd
&& NFSW_CONTIG(owp
, nfsd
); nfsd
= wp
) {
1348 wp
= nfsd
->nd_hash
.le_next
;
1349 if (NFSW_SAMECRED(owp
, nfsd
))
1350 nfsrvw_coalesce(owp
, nfsd
);
1353 LIST_INSERT_HEAD(wpp
, nfsd
, nd_hash
);
1360 * Now, do VOP_WRITE()s for any one(s) that need to be done now
1361 * and generate the associated reply mbuf list(s).
1364 cur_usec
= nfs_curusec();
1366 for (nfsd
= slp
->ns_tq
.lh_first
; nfsd
; nfsd
= owp
) {
1367 owp
= nfsd
->nd_tq
.le_next
;
1368 if (nfsd
->nd_time
> cur_usec
)
1372 NFS_DPF(WG
, ("P%03x", nfsd
->nd_retxid
& 0xfff));
1373 LIST_REMOVE(nfsd
, nd_tq
);
1374 LIST_REMOVE(nfsd
, nd_hash
);
1376 info
.mrep
= nfsd
->nd_mrep
;
1377 info
.v3
= (nfsd
->nd_flag
& ND_NFSV3
);
1378 nfsd
->nd_mrep
= NULL
;
1379 cred
= &nfsd
->nd_cr
;
1380 forat_ret
= aftat_ret
= 1;
1381 error
= nfsrv_fhtovp(&nfsd
->nd_fh
, 1, &mp
, &vp
, cred
, slp
,
1382 nfsd
->nd_nam
, &rdonly
, (nfsd
->nd_flag
& ND_KERBAUTH
), TRUE
);
1385 forat_ret
= VOP_GETATTR(vp
, &forat
);
1386 if (vp
->v_type
!= VREG
) {
1390 error
= (vp
->v_type
== VDIR
) ? EISDIR
: EACCES
;
1396 error
= nfsrv_access(mp
, vp
, VWRITE
, cred
, rdonly
, td
, 1);
1399 if (nfsd
->nd_stable
== NFSV3WRITE_UNSTABLE
)
1400 ioflags
= IO_NODELOCKED
;
1401 else if (nfsd
->nd_stable
== NFSV3WRITE_DATASYNC
)
1402 ioflags
= (IO_SYNC
| IO_NODELOCKED
);
1404 ioflags
= (IO_METASYNC
| IO_SYNC
| IO_NODELOCKED
);
1405 uiop
->uio_rw
= UIO_WRITE
;
1406 uiop
->uio_segflg
= UIO_SYSSPACE
;
1407 uiop
->uio_td
= NULL
;
1408 uiop
->uio_offset
= nfsd
->nd_off
;
1409 uiop
->uio_resid
= nfsd
->nd_eoff
- nfsd
->nd_off
;
1410 if (uiop
->uio_resid
> 0) {
1418 uiop
->uio_iovcnt
= i
;
1419 MALLOC(iov
, struct iovec
*, i
* sizeof (struct iovec
),
1421 uiop
->uio_iov
= ivp
= iov
;
1424 if (mp1
->m_len
> 0) {
1425 ivp
->iov_base
= mtod(mp1
, caddr_t
);
1426 ivp
->iov_len
= mp1
->m_len
;
1432 error
= VOP_WRITE(vp
, uiop
, ioflags
, cred
);
1433 nfsstats
.srvvop_writes
++;
1435 FREE((caddr_t
)iov
, M_TEMP
);
1440 aftat_ret
= VOP_GETATTR(vp
, &va
);
1446 * Loop around generating replies for all write rpcs that have
1447 * now been completed.
1451 NFS_DPF(WG
, ("R%03x", nfsd
->nd_retxid
& 0xfff));
1453 nfsm_writereply(&info
, nfsd
, slp
, error
,
1454 NFSX_WCCDATA(info
.v3
));
1456 nfsm_srvwcc_data(&info
, nfsd
, forat_ret
, &forat
,
1460 nfsm_writereply(&info
, nfsd
, slp
, error
,
1461 NFSX_PREOPATTR(info
.v3
) +
1462 NFSX_POSTOPORFATTR(info
.v3
) +
1464 NFSX_WRITEVERF(info
.v3
));
1466 nfsm_srvwcc_data(&info
, nfsd
, forat_ret
, &forat
,
1468 tl
= nfsm_build(&info
, 4 * NFSX_UNSIGNED
);
1469 *tl
++ = txdr_unsigned(nfsd
->nd_len
);
1470 *tl
++ = txdr_unsigned(swp
->nd_stable
);
1472 * Actually, there is no need to txdr these fields,
1473 * but it may make the values more human readable,
1474 * for debugging purposes.
1476 if (nfsver
.tv_sec
== 0)
1478 *tl
++ = txdr_unsigned(nfsver
.tv_sec
);
1479 *tl
= txdr_unsigned(nfsver
.tv_nsec
/ 1000);
1481 fp
= nfsm_build(&info
, NFSX_V2FATTR
);
1482 nfsm_srvfattr(nfsd
, &va
, fp
);
1485 nfsd
->nd_mreq
= info
.mreq
;
1487 panic("nfsrv_write: nd_mrep not free");
1490 * Done. Put it at the head of the timer queue so that
1491 * the final phase can return the reply.
1496 LIST_INSERT_HEAD(&slp
->ns_tq
, nfsd
, nd_tq
);
1498 nfsd
= swp
->nd_coalesce
.lh_first
;
1500 LIST_REMOVE(nfsd
, nd_tq
);
1506 LIST_INSERT_HEAD(&slp
->ns_tq
, swp
, nd_tq
);
1513 * Search for a reply to return.
1516 for (nfsd
= slp
->ns_tq
.lh_first
; nfsd
; nfsd
= nfsd
->nd_tq
.le_next
)
1517 if (nfsd
->nd_mreq
) {
1518 NFS_DPF(WG
, ("X%03x", nfsd
->nd_retxid
& 0xfff));
1519 LIST_REMOVE(nfsd
, nd_tq
);
1520 *mrq
= nfsd
->nd_mreq
;
1530 * Coalesce the write request nfsd into owp. To do this we must:
1531 * - remove nfsd from the queues
1532 * - merge nfsd->nd_mrep into owp->nd_mrep
1533 * - update the nd_eoff and nd_stable for owp
1534 * - put nfsd on owp's nd_coalesce list
1535 * NB: Must be called at splsoftclock().
1538 nfsrvw_coalesce(struct nfsrv_descript
*owp
, struct nfsrv_descript
*nfsd
)
1542 struct nfsrv_descript
*p
;
1544 NFS_DPF(WG
, ("C%03x-%03x",
1545 nfsd
->nd_retxid
& 0xfff, owp
->nd_retxid
& 0xfff));
1546 LIST_REMOVE(nfsd
, nd_hash
);
1547 LIST_REMOVE(nfsd
, nd_tq
);
1548 if (owp
->nd_eoff
< nfsd
->nd_eoff
) {
1549 overlap
= owp
->nd_eoff
- nfsd
->nd_off
;
1551 panic("nfsrv_coalesce: bad off");
1553 m_adj(nfsd
->nd_mrep
, overlap
);
1557 mp1
->m_next
= nfsd
->nd_mrep
;
1558 owp
->nd_eoff
= nfsd
->nd_eoff
;
1560 m_freem(nfsd
->nd_mrep
);
1561 nfsd
->nd_mrep
= NULL
;
1562 if (nfsd
->nd_stable
== NFSV3WRITE_FILESYNC
)
1563 owp
->nd_stable
= NFSV3WRITE_FILESYNC
;
1564 else if (nfsd
->nd_stable
== NFSV3WRITE_DATASYNC
&&
1565 owp
->nd_stable
== NFSV3WRITE_UNSTABLE
)
1566 owp
->nd_stable
= NFSV3WRITE_DATASYNC
;
1567 LIST_INSERT_HEAD(&owp
->nd_coalesce
, nfsd
, nd_tq
);
1570 * If nfsd had anything else coalesced into it, transfer them
1571 * to owp, otherwise their replies will never get sent.
1573 for (p
= nfsd
->nd_coalesce
.lh_first
; p
;
1574 p
= nfsd
->nd_coalesce
.lh_first
) {
1575 LIST_REMOVE(p
, nd_tq
);
1576 LIST_INSERT_HEAD(&owp
->nd_coalesce
, p
, nd_tq
);
1581 * nfs create service
1582 * now does a truncate to 0 length via. setattr if it already exists
1585 nfsrv_create(struct nfsrv_descript
*nfsd
, struct nfssvc_sock
*slp
,
1586 struct thread
*td
, struct mbuf
**mrq
)
1588 struct sockaddr
*nam
= nfsd
->nd_nam
;
1589 struct ucred
*cred
= &nfsd
->nd_cr
;
1590 struct nfs_fattr
*fp
;
1591 struct vattr va
, dirfor
, diraft
;
1592 struct vattr
*vap
= &va
;
1593 struct nfsv2_sattr
*sp
;
1595 struct nlookupdata nd
;
1596 int error
= 0, len
, tsize
, dirfor_ret
= 1, diraft_ret
= 1;
1597 udev_t rdev
= NOUDEV
;
1599 int how
, exclusive_flag
= 0;
1607 u_char cverf
[NFSX_V3CREATEVERF
];
1608 struct nfsm_info info
;
1610 nfsdbprintf(("%s %d\n", __FILE__
, __LINE__
));
1616 info
.mrep
= nfsd
->nd_mrep
;
1618 info
.md
= nfsd
->nd_md
;
1619 info
.dpos
= nfsd
->nd_dpos
;
1620 info
.v3
= (nfsd
->nd_flag
& ND_NFSV3
);
1622 fhp
= &nfh
.fh_generic
;
1623 NEGREPLYOUT(nfsm_srvmtofh(&info
, nfsd
, fhp
, &error
));
1624 NEGREPLYOUT(len
= nfsm_srvnamesiz(&info
, &error
));
1627 * Call namei and do initial cleanup to get a few things
1628 * out of the way. If we get an initial error we cleanup
1629 * and return here to avoid special-casing the invalid nd
1630 * structure through the rest of the case. dirp may be
1631 * set even if an error occurs, but the nd structure will not
1632 * be valid at all if an error occurs so we have to invalidate it
1633 * prior to calling nfsm_reply ( which might goto nfsmout ).
1635 error
= nfs_namei(&nd
, cred
, NLC_CREATE
, &dvp
, &vp
,
1636 fhp
, len
, slp
, nam
, &info
.md
, &info
.dpos
, &dirp
,
1637 td
, (nfsd
->nd_flag
& ND_KERBAUTH
), FALSE
);
1638 mp
= vfs_getvfs(&fhp
->fh_fsid
);
1642 dirfor_ret
= VOP_GETATTR(dirp
, &dirfor
);
1649 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
1650 NFSX_WCCDATA(info
.v3
), &error
));
1651 nfsm_srvwcc_data(&info
, nfsd
, dirfor_ret
, &dirfor
,
1652 diraft_ret
, &diraft
);
1658 * No error. Continue. State:
1661 * vp may be valid or NULL if the target does not
1665 * The error state is set through the code and we may also do some
1666 * opportunistic releasing of vnodes to avoid holding locks through
1667 * NFS I/O. The cleanup at the end is a catch-all
1672 NULLOUT(tl
= nfsm_dissect(&info
, NFSX_UNSIGNED
));
1673 how
= fxdr_unsigned(int, *tl
);
1675 case NFSV3CREATE_GUARDED
:
1681 case NFSV3CREATE_UNCHECKED
:
1682 ERROROUT(nfsm_srvsattr(&info
, vap
));
1684 case NFSV3CREATE_EXCLUSIVE
:
1685 NULLOUT(cp
= nfsm_dissect(&info
, NFSX_V3CREATEVERF
));
1686 bcopy(cp
, cverf
, NFSX_V3CREATEVERF
);
1690 vap
->va_type
= VREG
;
1692 NULLOUT(sp
= nfsm_dissect(&info
, NFSX_V2SATTR
));
1693 vap
->va_type
= IFTOVT(fxdr_unsigned(u_int32_t
, sp
->sa_mode
));
1694 if (vap
->va_type
== VNON
)
1695 vap
->va_type
= VREG
;
1696 vap
->va_mode
= nfstov_mode(sp
->sa_mode
);
1697 switch (vap
->va_type
) {
1699 tsize
= fxdr_unsigned(int32_t, sp
->sa_size
);
1701 vap
->va_size
= (u_quad_t
)tsize
;
1706 rdev
= fxdr_unsigned(long, sp
->sa_size
);
1714 * Iff doesn't exist, create it
1715 * otherwise just truncate to 0 length
1716 * should I set the mode too ?
1718 * The only possible error we can have at this point is EEXIST.
1719 * nd.ni_vp will also be non-NULL in that case.
1722 if (vap
->va_mode
== (mode_t
)VNOVAL
)
1724 if (vap
->va_type
== VREG
|| vap
->va_type
== VSOCK
) {
1726 error
= VOP_NCREATE(&nd
.nl_nch
, dvp
, &vp
,
1731 if (exclusive_flag
) {
1734 bcopy(cverf
, (caddr_t
)&vap
->va_atime
,
1736 error
= VOP_SETATTR(vp
, vap
, cred
);
1740 vap
->va_type
== VCHR
||
1741 vap
->va_type
== VBLK
||
1742 vap
->va_type
== VFIFO
1745 * Handle SysV FIFO node special cases. All other
1746 * devices require super user to access.
1748 if (vap
->va_type
== VCHR
&& rdev
== 0xffffffff)
1749 vap
->va_type
= VFIFO
;
1750 if (vap
->va_type
!= VFIFO
&&
1751 (error
= priv_check_cred(cred
, PRIV_ROOT
, 0))) {
1754 vap
->va_rmajor
= umajor(rdev
);
1755 vap
->va_rminor
= uminor(rdev
);
1758 error
= VOP_NMKNOD(&nd
.nl_nch
, dvp
, &vp
, nd
.nl_cred
, vap
);
1765 * XXX what is this junk supposed to do ?
1772 * release dvp prior to lookup
1780 * Even though LOCKPARENT was cleared, ni_dvp may
1783 nd
.ni_cnd
.cn_nameiop
= NAMEI_LOOKUP
;
1784 nd
.ni_cnd
.cn_flags
&= ~(CNP_LOCKPARENT
);
1785 nd
.ni_cnd
.cn_td
= td
;
1786 nd
.ni_cnd
.cn_cred
= cred
;
1788 error
= lookup(&nd
);
1792 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
1794 /* fall through on certain errors */
1796 nfsrv_object_create(nd
.ni_vp
);
1797 if (nd
.ni_cnd
.cn_flags
& CNP_ISSYMLINK
) {
1806 if (vap
->va_size
!= -1) {
1807 error
= nfsrv_access(mp
, vp
, VWRITE
, cred
,
1808 (nd
.nl_flags
& NLC_NFS_RDONLY
), td
, 0);
1810 tempsize
= vap
->va_size
;
1812 vap
->va_size
= tempsize
;
1813 error
= VOP_SETATTR(vp
, vap
, cred
);
1819 bzero(&fhp
->fh_fid
, sizeof(fhp
->fh_fid
));
1820 error
= VFS_VPTOFH(vp
, &fhp
->fh_fid
);
1822 error
= VOP_GETATTR(vp
, vap
);
1825 if (exclusive_flag
&& !error
&&
1826 bcmp(cverf
, (caddr_t
)&vap
->va_atime
, NFSX_V3CREATEVERF
))
1828 diraft_ret
= VOP_GETATTR(dirp
, &diraft
);
1832 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
1833 NFSX_SRVFH(info
.v3
) + NFSX_FATTR(info
.v3
) +
1834 NFSX_WCCDATA(info
.v3
),
1838 nfsm_srvpostop_fh(&info
, fhp
);
1839 nfsm_srvpostop_attr(&info
, nfsd
, 0, vap
);
1841 nfsm_srvwcc_data(&info
, nfsd
, dirfor_ret
, &dirfor
,
1842 diraft_ret
, &diraft
);
1845 nfsm_srvfhtom(&info
, fhp
);
1846 fp
= nfsm_build(&info
, NFSX_V2FATTR
);
1847 nfsm_srvfattr(nfsd
, vap
, fp
);
1852 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
, 0, &error
));
1873 * nfs v3 mknod service
1876 nfsrv_mknod(struct nfsrv_descript
*nfsd
, struct nfssvc_sock
*slp
,
1877 struct thread
*td
, struct mbuf
**mrq
)
1879 struct sockaddr
*nam
= nfsd
->nd_nam
;
1880 struct ucred
*cred
= &nfsd
->nd_cr
;
1881 struct vattr va
, dirfor
, diraft
;
1882 struct vattr
*vap
= &va
;
1884 struct nlookupdata nd
;
1885 int error
= 0, len
, dirfor_ret
= 1, diraft_ret
= 1;
1892 struct nfsm_info info
;
1894 nfsdbprintf(("%s %d\n", __FILE__
, __LINE__
));
1900 info
.mrep
= nfsd
->nd_mrep
;
1902 info
.md
= nfsd
->nd_md
;
1903 info
.dpos
= nfsd
->nd_dpos
;
1905 fhp
= &nfh
.fh_generic
;
1906 NEGREPLYOUT(nfsm_srvmtofh(&info
, nfsd
, fhp
, &error
));
1907 NEGREPLYOUT(len
= nfsm_srvnamesiz(&info
, &error
));
1910 * Handle nfs_namei() call. If an error occurs, the nd structure
1911 * is not valid. However, nfsm_*() routines may still jump to
1915 error
= nfs_namei(&nd
, cred
, NLC_CREATE
, &dvp
, &vp
,
1916 fhp
, len
, slp
, nam
, &info
.md
, &info
.dpos
, &dirp
,
1917 td
, (nfsd
->nd_flag
& ND_KERBAUTH
), FALSE
);
1919 dirfor_ret
= VOP_GETATTR(dirp
, &dirfor
);
1921 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
1922 NFSX_WCCDATA(1), &error
));
1923 nfsm_srvwcc_data(&info
, nfsd
, dirfor_ret
, &dirfor
,
1924 diraft_ret
, &diraft
);
1928 NULLOUT(tl
= nfsm_dissect(&info
, NFSX_UNSIGNED
));
1929 vtyp
= nfsv3tov_type(*tl
);
1930 if (vtyp
!= VCHR
&& vtyp
!= VBLK
&& vtyp
!= VSOCK
&& vtyp
!= VFIFO
) {
1931 error
= NFSERR_BADTYPE
;
1935 ERROROUT(nfsm_srvsattr(&info
, vap
));
1936 if (vtyp
== VCHR
|| vtyp
== VBLK
) {
1937 NULLOUT(tl
= nfsm_dissect(&info
, 2 * NFSX_UNSIGNED
));
1938 vap
->va_rmajor
= fxdr_unsigned(u_int32_t
, *tl
++);
1939 vap
->va_rminor
= fxdr_unsigned(u_int32_t
, *tl
);
1943 * Iff doesn't exist, create it.
1949 vap
->va_type
= vtyp
;
1950 if (vap
->va_mode
== (mode_t
)VNOVAL
)
1952 if (vtyp
== VSOCK
) {
1954 error
= VOP_NCREATE(&nd
.nl_nch
, dvp
, &vp
, nd
.nl_cred
, vap
);
1958 if (vtyp
!= VFIFO
&& (error
= priv_check_cred(cred
, PRIV_ROOT
, 0)))
1962 error
= VOP_NMKNOD(&nd
.nl_nch
, dvp
, &vp
, nd
.nl_cred
, vap
);
1970 * send response, cleanup, return.
1982 bzero(&fhp
->fh_fid
, sizeof(fhp
->fh_fid
));
1983 error
= VFS_VPTOFH(vp
, &fhp
->fh_fid
);
1985 error
= VOP_GETATTR(vp
, vap
);
1991 diraft_ret
= VOP_GETATTR(dirp
, &diraft
);
1996 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
1997 NFSX_SRVFH(1) + NFSX_POSTOPATTR(1) +
1998 NFSX_WCCDATA(1), &error
));
2000 nfsm_srvpostop_fh(&info
, fhp
);
2001 nfsm_srvpostop_attr(&info
, nfsd
, 0, vap
);
2003 nfsm_srvwcc_data(&info
, nfsd
, dirfor_ret
, &dirfor
,
2004 diraft_ret
, &diraft
);
2024 * nfs remove service
2027 nfsrv_remove(struct nfsrv_descript
*nfsd
, struct nfssvc_sock
*slp
,
2028 struct thread
*td
, struct mbuf
**mrq
)
2030 struct sockaddr
*nam
= nfsd
->nd_nam
;
2031 struct ucred
*cred
= &nfsd
->nd_cr
;
2032 struct nlookupdata nd
;
2033 int error
= 0, len
, dirfor_ret
= 1, diraft_ret
= 1;
2037 struct vattr dirfor
, diraft
;
2040 struct nfsm_info info
;
2042 nfsdbprintf(("%s %d\n", __FILE__
, __LINE__
));
2048 info
.mrep
= nfsd
->nd_mrep
;
2050 info
.md
= nfsd
->nd_md
;
2051 info
.dpos
= nfsd
->nd_dpos
;
2052 info
.v3
= (nfsd
->nd_flag
& ND_NFSV3
);
2054 fhp
= &nfh
.fh_generic
;
2055 NEGREPLYOUT(nfsm_srvmtofh(&info
, nfsd
, fhp
, &error
));
2056 NEGREPLYOUT(len
= nfsm_srvnamesiz(&info
, &error
));
2058 error
= nfs_namei(&nd
, cred
, NLC_DELETE
, &dvp
, &vp
,
2059 fhp
, len
, slp
, nam
, &info
.md
, &info
.dpos
, &dirp
,
2060 td
, (nfsd
->nd_flag
& ND_KERBAUTH
), FALSE
);
2063 dirfor_ret
= VOP_GETATTR(dirp
, &dirfor
);
2066 if (vp
->v_type
== VDIR
) {
2067 error
= EPERM
; /* POSIX */
2071 * The root of a mounted filesystem cannot be deleted.
2073 if (vp
->v_flag
& VROOT
) {
2085 error
= VOP_NREMOVE(&nd
.nl_nch
, dvp
, nd
.nl_cred
);
2090 if (dirp
&& info
.v3
)
2091 diraft_ret
= VOP_GETATTR(dirp
, &diraft
);
2092 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
, NFSX_WCCDATA(info
.v3
), &error
));
2094 nfsm_srvwcc_data(&info
, nfsd
, dirfor_ret
, &dirfor
,
2095 diraft_ret
, &diraft
);
2115 * nfs rename service
2118 nfsrv_rename(struct nfsrv_descript
*nfsd
, struct nfssvc_sock
*slp
,
2119 struct thread
*td
, struct mbuf
**mrq
)
2121 struct sockaddr
*nam
= nfsd
->nd_nam
;
2122 struct ucred
*cred
= &nfsd
->nd_cr
;
2123 int error
= 0, len
, len2
, fdirfor_ret
= 1, fdiraft_ret
= 1;
2124 int tdirfor_ret
= 1, tdiraft_ret
= 1;
2125 struct nlookupdata fromnd
, tond
;
2126 struct vnode
*fvp
, *fdirp
, *fdvp
;
2127 struct vnode
*tvp
, *tdirp
, *tdvp
;
2128 struct namecache
*ncp
;
2129 struct vattr fdirfor
, fdiraft
, tdirfor
, tdiraft
;
2131 fhandle_t
*ffhp
, *tfhp
;
2133 struct nfsm_info info
;
2135 info
.mrep
= nfsd
->nd_mrep
;
2137 info
.md
= nfsd
->nd_md
;
2138 info
.dpos
= nfsd
->nd_dpos
;
2139 info
.v3
= (nfsd
->nd_flag
& ND_NFSV3
);
2141 nfsdbprintf(("%s %d\n", __FILE__
, __LINE__
));
2145 ffhp
= &fnfh
.fh_generic
;
2146 tfhp
= &tnfh
.fh_generic
;
2149 * Clear fields incase goto nfsmout occurs from macro.
2152 nlookup_zero(&fromnd
);
2153 nlookup_zero(&tond
);
2157 NEGREPLYOUT(nfsm_srvmtofh(&info
, nfsd
, ffhp
, &error
));
2158 NEGREPLYOUT(len
= nfsm_srvnamesiz(&info
, &error
));
2161 * Remember our original uid so that we can reset cr_uid before
2162 * the second nfs_namei() call, in case it is remapped.
2164 saved_uid
= cred
->cr_uid
;
2165 error
= nfs_namei(&fromnd
, cred
, NLC_RENAME_SRC
,
2167 ffhp
, len
, slp
, nam
, &info
.md
, &info
.dpos
, &fdirp
,
2168 td
, (nfsd
->nd_flag
& ND_KERBAUTH
), FALSE
);
2171 fdirfor_ret
= VOP_GETATTR(fdirp
, &fdirfor
);
2174 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
2175 2 * NFSX_WCCDATA(info
.v3
), &error
));
2176 nfsm_srvwcc_data(&info
, nfsd
, fdirfor_ret
, &fdirfor
,
2177 fdiraft_ret
, &fdiraft
);
2178 nfsm_srvwcc_data(&info
, nfsd
, tdirfor_ret
, &tdirfor
,
2179 tdiraft_ret
, &tdiraft
);
2185 * We have to unlock the from ncp before we can safely lookup
2188 KKASSERT(fromnd
.nl_flags
& NLC_NCPISLOCKED
);
2189 cache_unlock(&fromnd
.nl_nch
);
2190 fromnd
.nl_flags
&= ~NLC_NCPISLOCKED
;
2191 NEGREPLYOUT(nfsm_srvmtofh(&info
, nfsd
, tfhp
, &error
));
2192 NEGATIVEOUT(len2
= nfsm_strsiz(&info
, NFS_MAXNAMLEN
));
2193 cred
->cr_uid
= saved_uid
;
2195 error
= nfs_namei(&tond
, cred
, NLC_RENAME_DST
, NULL
, NULL
,
2196 tfhp
, len2
, slp
, nam
, &info
.md
, &info
.dpos
, &tdirp
,
2197 td
, (nfsd
->nd_flag
& ND_KERBAUTH
), FALSE
);
2200 tdirfor_ret
= VOP_GETATTR(tdirp
, &tdirfor
);
2208 if (cache_lock_nonblock(&fromnd
.nl_nch
) == 0) {
2209 cache_resolve(&fromnd
.nl_nch
, fromnd
.nl_cred
);
2210 } else if (fromnd
.nl_nch
.ncp
> tond
.nl_nch
.ncp
) {
2211 cache_lock(&fromnd
.nl_nch
);
2212 cache_resolve(&fromnd
.nl_nch
, fromnd
.nl_cred
);
2214 cache_unlock(&tond
.nl_nch
);
2215 cache_lock(&fromnd
.nl_nch
);
2216 cache_resolve(&fromnd
.nl_nch
, fromnd
.nl_cred
);
2217 cache_lock(&tond
.nl_nch
);
2218 cache_resolve(&tond
.nl_nch
, tond
.nl_cred
);
2220 fromnd
.nl_flags
|= NLC_NCPISLOCKED
;
2222 fvp
= fromnd
.nl_nch
.ncp
->nc_vp
;
2223 tvp
= tond
.nl_nch
.ncp
->nc_vp
;
2226 * Set fdvp and tdvp. We haven't done all the topology checks
2227 * so these can wind up NULL (e.g. if either fvp or tvp is a mount
2228 * point). If we get through the checks these will be guarenteed
2231 * Holding the children ncp's should be sufficient to prevent
2232 * fdvp and tdvp ripouts.
2234 if (fromnd
.nl_nch
.ncp
->nc_parent
)
2235 fdvp
= fromnd
.nl_nch
.ncp
->nc_parent
->nc_vp
;
2238 if (tond
.nl_nch
.ncp
->nc_parent
)
2239 tdvp
= tond
.nl_nch
.ncp
->nc_parent
->nc_vp
;
2244 if (fvp
->v_type
== VDIR
&& tvp
->v_type
!= VDIR
) {
2250 } else if (fvp
->v_type
!= VDIR
&& tvp
->v_type
== VDIR
) {
2257 if (tvp
->v_type
== VDIR
&& (tond
.nl_nch
.ncp
->nc_flag
& NCF_ISMOUNTPT
)) {
2265 if (fvp
->v_type
== VDIR
&& (fromnd
.nl_nch
.ncp
->nc_flag
& NCF_ISMOUNTPT
)) {
2272 if (fromnd
.nl_nch
.mount
!= tond
.nl_nch
.mount
) {
2279 if (fromnd
.nl_nch
.ncp
== tond
.nl_nch
.ncp
->nc_parent
) {
2287 * You cannot rename a source into itself or a subdirectory of itself.
2288 * We check this by travsering the target directory upwards looking
2289 * for a match against the source.
2292 for (ncp
= tond
.nl_nch
.ncp
; ncp
; ncp
= ncp
->nc_parent
) {
2293 if (fromnd
.nl_nch
.ncp
== ncp
) {
2301 * If source is the same as the destination (that is the
2302 * same vnode with the same name in the same directory),
2303 * then there is nothing to do.
2305 if (fromnd
.nl_nch
.ncp
== tond
.nl_nch
.ncp
)
2310 * The VOP_NRENAME function releases all vnode references &
2311 * locks prior to returning so we need to clear the pointers
2312 * to bypass cleanup code later on.
2314 error
= VOP_NRENAME(&fromnd
.nl_nch
, &tond
.nl_nch
,
2315 fdvp
, tdvp
, tond
.nl_cred
);
2324 fdiraft_ret
= VOP_GETATTR(fdirp
, &fdiraft
);
2326 tdiraft_ret
= VOP_GETATTR(tdirp
, &tdiraft
);
2327 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
2328 2 * NFSX_WCCDATA(info
.v3
), &error
));
2330 nfsm_srvwcc_data(&info
, nfsd
, fdirfor_ret
, &fdirfor
,
2331 fdiraft_ret
, &fdiraft
);
2332 nfsm_srvwcc_data(&info
, nfsd
, tdirfor_ret
, &tdirfor
,
2333 tdiraft_ret
, &tdiraft
);
2342 nlookup_done(&tond
);
2345 nlookup_done(&fromnd
);
2353 nfsrv_link(struct nfsrv_descript
*nfsd
, struct nfssvc_sock
*slp
,
2354 struct thread
*td
, struct mbuf
**mrq
)
2356 struct sockaddr
*nam
= nfsd
->nd_nam
;
2357 struct ucred
*cred
= &nfsd
->nd_cr
;
2358 struct nlookupdata nd
;
2359 int error
= 0, rdonly
, len
, dirfor_ret
= 1, diraft_ret
= 1;
2367 struct vattr dirfor
, diraft
, at
;
2369 fhandle_t
*fhp
, *dfhp
;
2370 struct nfsm_info info
;
2372 info
.mrep
= nfsd
->nd_mrep
;
2374 info
.md
= nfsd
->nd_md
;
2375 info
.dpos
= nfsd
->nd_dpos
;
2376 info
.v3
= (nfsd
->nd_flag
& ND_NFSV3
);
2378 nfsdbprintf(("%s %d\n", __FILE__
, __LINE__
));
2380 dirp
= dvp
= vp
= xp
= NULL
;
2383 fhp
= &nfh
.fh_generic
;
2384 dfhp
= &dnfh
.fh_generic
;
2385 NEGREPLYOUT(nfsm_srvmtofh(&info
, nfsd
, fhp
, &error
));
2386 NEGREPLYOUT(nfsm_srvmtofh(&info
, nfsd
, dfhp
, &error
));
2387 NEGREPLYOUT(len
= nfsm_srvnamesiz(&info
, &error
));
2389 error
= nfsrv_fhtovp(fhp
, FALSE
, &xmp
, &xp
, cred
, slp
, nam
,
2390 &rdonly
, (nfsd
->nd_flag
& ND_KERBAUTH
), TRUE
);
2392 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
2393 NFSX_POSTOPATTR(info
.v3
) +
2394 NFSX_WCCDATA(info
.v3
),
2396 nfsm_srvpostop_attr(&info
, nfsd
, getret
, &at
);
2397 nfsm_srvwcc_data(&info
, nfsd
, dirfor_ret
, &dirfor
,
2398 diraft_ret
, &diraft
);
2403 if (xp
->v_type
== VDIR
) {
2404 error
= EPERM
; /* POSIX */
2408 error
= nfs_namei(&nd
, cred
, NLC_CREATE
, &dvp
, &vp
,
2409 dfhp
, len
, slp
, nam
, &info
.md
, &info
.dpos
, &dirp
,
2410 td
, (nfsd
->nd_flag
& ND_KERBAUTH
), FALSE
);
2413 dirfor_ret
= VOP_GETATTR(dirp
, &dirfor
);
2422 if (xp
->v_mount
!= dvp
->v_mount
)
2427 error
= VOP_NLINK(&nd
.nl_nch
, dvp
, xp
, nd
.nl_cred
);
2435 getret
= VOP_GETATTR(xp
, &at
);
2437 diraft_ret
= VOP_GETATTR(dirp
, &diraft
);
2438 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
2439 NFSX_POSTOPATTR(info
.v3
) + NFSX_WCCDATA(info
.v3
),
2442 nfsm_srvpostop_attr(&info
, nfsd
, getret
, &at
);
2443 nfsm_srvwcc_data(&info
, nfsd
, dirfor_ret
, &dirfor
,
2444 diraft_ret
, &diraft
);
2468 * nfs symbolic link service
2471 nfsrv_symlink(struct nfsrv_descript
*nfsd
, struct nfssvc_sock
*slp
,
2472 struct thread
*td
, struct mbuf
**mrq
)
2474 struct sockaddr
*nam
= nfsd
->nd_nam
;
2475 struct ucred
*cred
= &nfsd
->nd_cr
;
2476 struct vattr va
, dirfor
, diraft
;
2477 struct nlookupdata nd
;
2478 struct vattr
*vap
= &va
;
2479 struct nfsv2_sattr
*sp
;
2480 char *pathcp
= NULL
;
2483 int error
= 0, len
, len2
, dirfor_ret
= 1, diraft_ret
= 1;
2489 struct nfsm_info info
;
2491 nfsdbprintf(("%s %d\n", __FILE__
, __LINE__
));
2497 info
.mrep
= nfsd
->nd_mrep
;
2499 info
.md
= nfsd
->nd_md
;
2500 info
.dpos
= nfsd
->nd_dpos
;
2501 info
.v3
= (nfsd
->nd_flag
& ND_NFSV3
);
2503 fhp
= &nfh
.fh_generic
;
2504 NEGREPLYOUT(nfsm_srvmtofh(&info
, nfsd
, fhp
, &error
));
2505 NEGREPLYOUT(len
= nfsm_srvnamesiz(&info
, &error
));
2507 error
= nfs_namei(&nd
, cred
, NLC_CREATE
, &dvp
, &vp
,
2508 fhp
, len
, slp
, nam
, &info
.md
, &info
.dpos
, &dirp
,
2509 td
, (nfsd
->nd_flag
& ND_KERBAUTH
), FALSE
);
2512 dirfor_ret
= VOP_GETATTR(dirp
, &dirfor
);
2519 ERROROUT(nfsm_srvsattr(&info
, vap
));
2521 NEGATIVEOUT(len2
= nfsm_strsiz(&info
, NFS_MAXPATHLEN
));
2522 MALLOC(pathcp
, caddr_t
, len2
+ 1, M_TEMP
, M_WAITOK
);
2523 iv
.iov_base
= pathcp
;
2525 io
.uio_resid
= len2
;
2529 io
.uio_segflg
= UIO_SYSSPACE
;
2530 io
.uio_rw
= UIO_READ
;
2532 ERROROUT(nfsm_mtouio(&info
, &io
, len2
));
2534 NULLOUT(sp
= nfsm_dissect(&info
, NFSX_V2SATTR
));
2535 vap
->va_mode
= nfstov_mode(sp
->sa_mode
);
2537 *(pathcp
+ len2
) = '\0';
2543 if (vap
->va_mode
== (mode_t
)VNOVAL
)
2547 error
= VOP_NSYMLINK(&nd
.nl_nch
, dvp
, &vp
, nd
.nl_cred
, vap
, pathcp
);
2551 bzero(&fhp
->fh_fid
, sizeof(fhp
->fh_fid
));
2552 error
= VFS_VPTOFH(vp
, &fhp
->fh_fid
);
2554 error
= VOP_GETATTR(vp
, vap
);
2569 FREE(pathcp
, M_TEMP
);
2573 diraft_ret
= VOP_GETATTR(dirp
, &diraft
);
2577 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
2578 NFSX_SRVFH(info
.v3
) + NFSX_POSTOPATTR(info
.v3
) +
2579 NFSX_WCCDATA(info
.v3
),
2583 nfsm_srvpostop_fh(&info
, fhp
);
2584 nfsm_srvpostop_attr(&info
, nfsd
, 0, vap
);
2586 nfsm_srvwcc_data(&info
, nfsd
, dirfor_ret
, &dirfor
,
2587 diraft_ret
, &diraft
);
2600 FREE(pathcp
, M_TEMP
);
2608 nfsrv_mkdir(struct nfsrv_descript
*nfsd
, struct nfssvc_sock
*slp
,
2609 struct thread
*td
, struct mbuf
**mrq
)
2611 struct sockaddr
*nam
= nfsd
->nd_nam
;
2612 struct ucred
*cred
= &nfsd
->nd_cr
;
2613 struct vattr va
, dirfor
, diraft
;
2614 struct vattr
*vap
= &va
;
2615 struct nfs_fattr
*fp
;
2616 struct nlookupdata nd
;
2618 int error
= 0, len
, dirfor_ret
= 1, diraft_ret
= 1;
2624 struct nfsm_info info
;
2626 nfsdbprintf(("%s %d\n", __FILE__
, __LINE__
));
2632 info
.dpos
= nfsd
->nd_dpos
;
2633 info
.mrep
= nfsd
->nd_mrep
;
2635 info
.md
= nfsd
->nd_md
;
2636 info
.v3
= (nfsd
->nd_flag
& ND_NFSV3
);
2638 fhp
= &nfh
.fh_generic
;
2639 NEGREPLYOUT(nfsm_srvmtofh(&info
, nfsd
, fhp
, &error
));
2640 NEGREPLYOUT(len
= nfsm_srvnamesiz(&info
, &error
));
2642 error
= nfs_namei(&nd
, cred
, NLC_CREATE
, &dvp
, &vp
,
2643 fhp
, len
, slp
, nam
, &info
.md
, &info
.dpos
, &dirp
,
2644 td
, (nfsd
->nd_flag
& ND_KERBAUTH
), FALSE
);
2647 dirfor_ret
= VOP_GETATTR(dirp
, &dirfor
);
2650 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
2651 NFSX_WCCDATA(info
.v3
), &error
));
2652 nfsm_srvwcc_data(&info
, nfsd
, dirfor_ret
, &dirfor
,
2653 diraft_ret
, &diraft
);
2659 ERROROUT(nfsm_srvsattr(&info
, vap
));
2661 NULLOUT(tl
= nfsm_dissect(&info
, NFSX_UNSIGNED
));
2662 vap
->va_mode
= nfstov_mode(*tl
++);
2666 * At this point nd.ni_dvp is referenced and exclusively locked and
2667 * nd.ni_vp, if it exists, is referenced but not locked.
2670 vap
->va_type
= VDIR
;
2677 * Issue mkdir op. Since SAVESTART is not set, the pathname
2678 * component is freed by the VOP call. This will fill-in
2679 * nd.ni_vp, reference, and exclusively lock it.
2681 if (vap
->va_mode
== (mode_t
)VNOVAL
)
2684 error
= VOP_NMKDIR(&nd
.nl_nch
, dvp
, &vp
, nd
.nl_cred
, vap
);
2689 bzero(&fhp
->fh_fid
, sizeof(fhp
->fh_fid
));
2690 error
= VFS_VPTOFH(vp
, &fhp
->fh_fid
);
2692 error
= VOP_GETATTR(vp
, vap
);
2696 diraft_ret
= VOP_GETATTR(dirp
, &diraft
);
2697 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
2698 NFSX_SRVFH(info
.v3
) + NFSX_POSTOPATTR(info
.v3
) +
2699 NFSX_WCCDATA(info
.v3
),
2703 nfsm_srvpostop_fh(&info
, fhp
);
2704 nfsm_srvpostop_attr(&info
, nfsd
, 0, vap
);
2706 nfsm_srvwcc_data(&info
, nfsd
, dirfor_ret
, &dirfor
,
2707 diraft_ret
, &diraft
);
2709 nfsm_srvfhtom(&info
, fhp
);
2710 fp
= nfsm_build(&info
, NFSX_V2FATTR
);
2711 nfsm_srvfattr(nfsd
, vap
, fp
);
2736 nfsrv_rmdir(struct nfsrv_descript
*nfsd
, struct nfssvc_sock
*slp
,
2737 struct thread
*td
, struct mbuf
**mrq
)
2739 struct sockaddr
*nam
= nfsd
->nd_nam
;
2740 struct ucred
*cred
= &nfsd
->nd_cr
;
2741 int error
= 0, len
, dirfor_ret
= 1, diraft_ret
= 1;
2745 struct vattr dirfor
, diraft
;
2748 struct nlookupdata nd
;
2749 struct nfsm_info info
;
2751 nfsdbprintf(("%s %d\n", __FILE__
, __LINE__
));
2757 info
.mrep
= nfsd
->nd_mrep
;
2759 info
.md
= nfsd
->nd_md
;
2760 info
.dpos
= nfsd
->nd_dpos
;
2761 info
.v3
= (nfsd
->nd_flag
& ND_NFSV3
);
2763 fhp
= &nfh
.fh_generic
;
2764 NEGREPLYOUT(nfsm_srvmtofh(&info
, nfsd
, fhp
, &error
));
2765 NEGREPLYOUT(len
= nfsm_srvnamesiz(&info
, &error
));
2767 error
= nfs_namei(&nd
, cred
, NLC_DELETE
, &dvp
, &vp
,
2768 fhp
, len
, slp
, nam
, &info
.md
, &info
.dpos
, &dirp
,
2769 td
, (nfsd
->nd_flag
& ND_KERBAUTH
), FALSE
);
2772 dirfor_ret
= VOP_GETATTR(dirp
, &dirfor
);
2775 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
2776 NFSX_WCCDATA(info
.v3
), &error
));
2777 nfsm_srvwcc_data(&info
, nfsd
, dirfor_ret
, &dirfor
,
2778 diraft_ret
, &diraft
);
2782 if (vp
->v_type
!= VDIR
) {
2788 * The root of a mounted filesystem cannot be deleted.
2790 if (vp
->v_flag
& VROOT
)
2794 * Issue or abort op. Since SAVESTART is not set, path name
2795 * component is freed by the VOP after either.
2802 error
= VOP_NRMDIR(&nd
.nl_nch
, dvp
, nd
.nl_cred
);
2809 diraft_ret
= VOP_GETATTR(dirp
, &diraft
);
2810 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
, NFSX_WCCDATA(info
.v3
), &error
));
2812 nfsm_srvwcc_data(&info
, nfsd
, dirfor_ret
, &dirfor
,
2813 diraft_ret
, &diraft
);
2835 * nfs readdir service
2836 * - mallocs what it thinks is enough to read
2837 * count rounded up to a multiple of NFS_DIRBLKSIZ <= NFS_MAXREADDIR
2838 * - calls VOP_READDIR()
2839 * - loops around building the reply
2840 * if the output generated exceeds count break out of loop
2841 * The nfsm_clget macro is used here so that the reply will be packed
2842 * tightly in mbuf clusters.
2843 * - it only knows that it has encountered eof when the VOP_READDIR()
2845 * - as such one readdir rpc will return eof false although you are there
2846 * and then the next will return eof
2847 * - it trims out records with d_fileno == 0
2848 * this doesn't matter for Unix clients, but they might confuse clients
2850 * NB: It is tempting to set eof to true if the VOP_READDIR() reads less
2851 * than requested, but this may not apply to all filesystems. For
2852 * example, client NFS does not { although it is never remote mounted
2854 * The alternate call nfsrv_readdirplus() does lookups as well.
2855 * PS: The NFS protocol spec. does not clarify what the "count" byte
2856 * argument is a count of.. just name strings and file id's or the
2857 * entire reply rpc or ...
2858 * I tried just file name and id sizes and it confused the Sun client,
2859 * so I am using the full rpc size now. The "paranoia.." comment refers
2860 * to including the status longwords that are not a part of the dir.
2861 * "entry" structures, but are in the rpc.
2865 u_int32_t fl_postopok
;
2866 u_int32_t fl_fattr
[NFSX_V3FATTR
/ sizeof (u_int32_t
)];
2868 u_int32_t fl_fhsize
;
2869 u_int32_t fl_nfh
[NFSX_V3FH
/ sizeof (u_int32_t
)];
2873 nfsrv_readdir(struct nfsrv_descript
*nfsd
, struct nfssvc_sock
*slp
,
2874 struct thread
*td
, struct mbuf
**mrq
)
2876 struct sockaddr
*nam
= nfsd
->nd_nam
;
2877 struct ucred
*cred
= &nfsd
->nd_cr
;
2882 struct mbuf
*mp1
, *mp2
;
2883 char *cpos
, *cend
, *rbuf
;
2884 struct vnode
*vp
= NULL
;
2885 struct mount
*mp
= NULL
;
2891 int len
, nlen
, rem
, xfer
, tsiz
, i
, error
= 0, getret
= 1;
2892 int siz
, cnt
, fullsiz
, eofflag
, rdonly
, ncookies
;
2893 u_quad_t off
, toff
, verf
;
2894 off_t
*cookies
= NULL
, *cookiep
;
2895 struct nfsm_info info
;
2897 info
.mrep
= nfsd
->nd_mrep
;
2899 info
.md
= nfsd
->nd_md
;
2900 info
.dpos
= nfsd
->nd_dpos
;
2901 info
.v3
= (nfsd
->nd_flag
& ND_NFSV3
);
2903 nfsdbprintf(("%s %d\n", __FILE__
, __LINE__
));
2904 fhp
= &nfh
.fh_generic
;
2905 NEGREPLYOUT(nfsm_srvmtofh(&info
, nfsd
, fhp
, &error
));
2907 NULLOUT(tl
= nfsm_dissect(&info
, 5 * NFSX_UNSIGNED
));
2908 toff
= fxdr_hyper(tl
);
2910 verf
= fxdr_hyper(tl
);
2913 NULLOUT(tl
= nfsm_dissect(&info
, 2 * NFSX_UNSIGNED
));
2914 toff
= fxdr_unsigned(u_quad_t
, *tl
++);
2915 verf
= 0; /* shut up gcc */
2918 cnt
= fxdr_unsigned(int, *tl
);
2919 siz
= ((cnt
+ DIRBLKSIZ
- 1) & ~(DIRBLKSIZ
- 1));
2920 xfer
= NFS_SRVMAXDATA(nfsd
);
2921 if ((unsigned)cnt
> xfer
)
2923 if ((unsigned)siz
> xfer
)
2926 error
= nfsrv_fhtovp(fhp
, 1, &mp
, &vp
, cred
, slp
, nam
,
2927 &rdonly
, (nfsd
->nd_flag
& ND_KERBAUTH
), TRUE
);
2928 if (!error
&& vp
->v_type
!= VDIR
) {
2934 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
, NFSX_UNSIGNED
, &error
));
2935 nfsm_srvpostop_attr(&info
, nfsd
, getret
, &at
);
2941 * Obtain lock on vnode for this section of the code
2945 error
= getret
= VOP_GETATTR(vp
, &at
);
2948 * XXX This check may be too strict for Solaris 2.5 clients.
2950 if (!error
&& toff
&& verf
&& verf
!= at
.va_filerev
)
2951 error
= NFSERR_BAD_COOKIE
;
2955 error
= nfsrv_access(mp
, vp
, VEXEC
, cred
, rdonly
, td
, 0);
2959 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
2960 NFSX_POSTOPATTR(info
.v3
), &error
));
2961 nfsm_srvpostop_attr(&info
, nfsd
, getret
, &at
);
2968 * end section. Allocate rbuf and continue
2970 MALLOC(rbuf
, caddr_t
, siz
, M_TEMP
, M_WAITOK
);
2973 iv
.iov_len
= fullsiz
;
2976 io
.uio_offset
= (off_t
)off
;
2977 io
.uio_resid
= fullsiz
;
2978 io
.uio_segflg
= UIO_SYSSPACE
;
2979 io
.uio_rw
= UIO_READ
;
2983 kfree((caddr_t
)cookies
, M_TEMP
);
2986 error
= VOP_READDIR(vp
, &io
, cred
, &eofflag
, &ncookies
, &cookies
);
2987 off
= (off_t
)io
.uio_offset
;
2988 if (!cookies
&& !error
)
2989 error
= NFSERR_PERM
;
2991 getret
= VOP_GETATTR(vp
, &at
);
2998 kfree((caddr_t
)rbuf
, M_TEMP
);
3000 kfree((caddr_t
)cookies
, M_TEMP
);
3001 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
3002 NFSX_POSTOPATTR(info
.v3
), &error
));
3003 nfsm_srvpostop_attr(&info
, nfsd
, getret
, &at
);
3008 siz
-= io
.uio_resid
;
3011 * If nothing read, return eof
3017 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
3018 NFSX_POSTOPATTR(info
.v3
) +
3019 NFSX_COOKIEVERF(info
.v3
) +
3023 nfsm_srvpostop_attr(&info
, nfsd
, getret
, &at
);
3024 tl
= nfsm_build(&info
, 4 * NFSX_UNSIGNED
);
3025 txdr_hyper(at
.va_filerev
, tl
);
3028 tl
= nfsm_build(&info
, 2 * NFSX_UNSIGNED
);
3031 FREE((caddr_t
)rbuf
, M_TEMP
);
3032 FREE((caddr_t
)cookies
, M_TEMP
);
3039 * Check for degenerate cases of nothing useful read.
3040 * If so go try again
3044 dp
= (struct dirent
*)cpos
;
3047 * For some reason FreeBSD's ufs_readdir() chooses to back the
3048 * directory offset up to a block boundary, so it is necessary to
3049 * skip over the records that preceed the requested offset. This
3050 * requires the assumption that file offset cookies monotonically
3053 while (cpos
< cend
&& ncookies
> 0 &&
3054 (dp
->d_ino
== 0 || dp
->d_type
== DT_WHT
||
3055 ((u_quad_t
)(*cookiep
)) <= toff
)) {
3056 dp
= _DIRENT_NEXT(dp
);
3061 if (cpos
>= cend
|| ncookies
== 0) {
3067 len
= 3 * NFSX_UNSIGNED
; /* paranoia, probably can be 0 */
3068 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
3069 NFSX_POSTOPATTR(info
.v3
) +
3070 NFSX_COOKIEVERF(info
.v3
) + siz
,
3073 nfsm_srvpostop_attr(&info
, nfsd
, getret
, &at
);
3074 tl
= nfsm_build(&info
, 2 * NFSX_UNSIGNED
);
3075 txdr_hyper(at
.va_filerev
, tl
);
3077 mp1
= mp2
= info
.mb
;
3079 be
= bp
+ M_TRAILINGSPACE(mp1
);
3081 /* Loop through the records and build reply */
3082 while (cpos
< cend
&& ncookies
> 0) {
3083 if (dp
->d_ino
!= 0 && dp
->d_type
!= DT_WHT
) {
3084 nlen
= dp
->d_namlen
;
3085 rem
= nfsm_rndup(nlen
) - nlen
;
3086 len
+= (4 * NFSX_UNSIGNED
+ nlen
+ rem
);
3088 len
+= 2 * NFSX_UNSIGNED
;
3094 * Build the directory record xdr from
3097 tl
= nfsm_clget(&info
, mp1
, mp2
, bp
, be
);
3099 bp
+= NFSX_UNSIGNED
;
3101 tl
= nfsm_clget(&info
, mp1
, mp2
, bp
, be
);
3102 *tl
= txdr_unsigned(dp
->d_ino
>> 32);
3103 bp
+= NFSX_UNSIGNED
;
3105 tl
= nfsm_clget(&info
, mp1
, mp2
, bp
, be
);
3106 *tl
= txdr_unsigned(dp
->d_ino
);
3107 bp
+= NFSX_UNSIGNED
;
3108 tl
= nfsm_clget(&info
, mp1
, mp2
, bp
, be
);
3109 *tl
= txdr_unsigned(nlen
);
3110 bp
+= NFSX_UNSIGNED
;
3112 /* And loop around copying the name */
3116 tl
= nfsm_clget(&info
, mp1
, mp2
, bp
, be
);
3121 bcopy(cp
, bp
, tsiz
);
3127 /* And null pad to a int32_t boundary */
3128 for (i
= 0; i
< rem
; i
++)
3130 tl
= nfsm_clget(&info
, mp1
, mp2
, bp
, be
);
3132 /* Finish off the record */
3134 *tl
= txdr_unsigned(*cookiep
>> 32);
3135 bp
+= NFSX_UNSIGNED
;
3136 tl
= nfsm_clget(&info
, mp1
, mp2
, bp
, be
);
3138 *tl
= txdr_unsigned(*cookiep
);
3139 bp
+= NFSX_UNSIGNED
;
3141 dp
= _DIRENT_NEXT(dp
);
3148 tl
= nfsm_clget(&info
, mp1
, mp2
, bp
, be
);
3150 bp
+= NFSX_UNSIGNED
;
3151 tl
= nfsm_clget(&info
, mp1
, mp2
, bp
, be
);
3156 bp
+= NFSX_UNSIGNED
;
3157 if (mp1
!= info
.mb
) {
3159 mp1
->m_len
= bp
- mtod(mp1
, caddr_t
);
3161 mp1
->m_len
+= bp
- info
.bpos
;
3162 FREE((caddr_t
)rbuf
, M_TEMP
);
3163 FREE((caddr_t
)cookies
, M_TEMP
);
3173 nfsrv_readdirplus(struct nfsrv_descript
*nfsd
, struct nfssvc_sock
*slp
,
3174 struct thread
*td
, struct mbuf
**mrq
)
3176 struct sockaddr
*nam
= nfsd
->nd_nam
;
3177 struct ucred
*cred
= &nfsd
->nd_cr
;
3182 struct mbuf
*mp1
, *mp2
;
3183 char *cpos
, *cend
, *rbuf
;
3184 struct vnode
*vp
= NULL
, *nvp
;
3185 struct mount
*mp
= NULL
;
3188 fhandle_t
*fhp
, *nfhp
= (fhandle_t
*)fl
.fl_nfh
;
3191 struct vattr va
, at
, *vap
= &va
;
3192 struct nfs_fattr
*fp
;
3193 int len
, nlen
, rem
, xfer
, tsiz
, i
, error
= 0, getret
= 1;
3194 int siz
, cnt
, fullsiz
, eofflag
, rdonly
, dirlen
, ncookies
;
3195 u_quad_t off
, toff
, verf
;
3196 off_t
*cookies
= NULL
, *cookiep
; /* needs to be int64_t or off_t */
3197 struct nfsm_info info
;
3199 info
.mrep
= nfsd
->nd_mrep
;
3201 info
.md
= nfsd
->nd_md
;
3202 info
.dpos
= nfsd
->nd_dpos
;
3203 info
.v3
= (nfsd
->nd_flag
& ND_NFSV3
);
3205 nfsdbprintf(("%s %d\n", __FILE__
, __LINE__
));
3206 fhp
= &nfh
.fh_generic
;
3207 NEGREPLYOUT(nfsm_srvmtofh(&info
, nfsd
, fhp
, &error
));
3208 NULLOUT(tl
= nfsm_dissect(&info
, 6 * NFSX_UNSIGNED
));
3209 toff
= fxdr_hyper(tl
);
3211 verf
= fxdr_hyper(tl
);
3213 siz
= fxdr_unsigned(int, *tl
++);
3214 cnt
= fxdr_unsigned(int, *tl
);
3216 siz
= ((siz
+ DIRBLKSIZ
- 1) & ~(DIRBLKSIZ
- 1));
3217 xfer
= NFS_SRVMAXDATA(nfsd
);
3218 if ((unsigned)cnt
> xfer
)
3220 if ((unsigned)siz
> xfer
)
3223 error
= nfsrv_fhtovp(fhp
, 1, &mp
, &vp
, cred
, slp
, nam
,
3224 &rdonly
, (nfsd
->nd_flag
& ND_KERBAUTH
), TRUE
);
3225 if (!error
&& vp
->v_type
!= VDIR
) {
3231 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
, NFSX_UNSIGNED
, &error
));
3232 nfsm_srvpostop_attr(&info
, nfsd
, getret
, &at
);
3236 error
= getret
= VOP_GETATTR(vp
, &at
);
3239 * XXX This check may be too strict for Solaris 2.5 clients.
3241 if (!error
&& toff
&& verf
&& verf
!= at
.va_filerev
)
3242 error
= NFSERR_BAD_COOKIE
;
3245 error
= nfsrv_access(mp
, vp
, VEXEC
, cred
, rdonly
, td
, 0);
3250 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
3251 NFSX_V3POSTOPATTR
, &error
));
3252 nfsm_srvpostop_attr(&info
, nfsd
, getret
, &at
);
3257 MALLOC(rbuf
, caddr_t
, siz
, M_TEMP
, M_WAITOK
);
3260 iv
.iov_len
= fullsiz
;
3263 io
.uio_offset
= (off_t
)off
;
3264 io
.uio_resid
= fullsiz
;
3265 io
.uio_segflg
= UIO_SYSSPACE
;
3266 io
.uio_rw
= UIO_READ
;
3270 kfree((caddr_t
)cookies
, M_TEMP
);
3273 error
= VOP_READDIR(vp
, &io
, cred
, &eofflag
, &ncookies
, &cookies
);
3274 off
= (u_quad_t
)io
.uio_offset
;
3275 getret
= VOP_GETATTR(vp
, &at
);
3276 if (!cookies
&& !error
)
3277 error
= NFSERR_PERM
;
3284 kfree((caddr_t
)cookies
, M_TEMP
);
3285 kfree((caddr_t
)rbuf
, M_TEMP
);
3286 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
3287 NFSX_V3POSTOPATTR
, &error
));
3288 nfsm_srvpostop_attr(&info
, nfsd
, getret
, &at
);
3293 siz
-= io
.uio_resid
;
3296 * If nothing read, return eof
3302 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
3307 nfsm_srvpostop_attr(&info
, nfsd
, getret
, &at
);
3308 tl
= nfsm_build(&info
, 4 * NFSX_UNSIGNED
);
3309 txdr_hyper(at
.va_filerev
, tl
);
3313 FREE((caddr_t
)cookies
, M_TEMP
);
3314 FREE((caddr_t
)rbuf
, M_TEMP
);
3321 * Check for degenerate cases of nothing useful read.
3322 * If so go try again
3326 dp
= (struct dirent
*)cpos
;
3329 * For some reason FreeBSD's ufs_readdir() chooses to back the
3330 * directory offset up to a block boundary, so it is necessary to
3331 * skip over the records that preceed the requested offset. This
3332 * requires the assumption that file offset cookies monotonically
3335 while (cpos
< cend
&& ncookies
> 0 &&
3336 (dp
->d_ino
== 0 || dp
->d_type
== DT_WHT
||
3337 ((u_quad_t
)(*cookiep
)) <= toff
)) {
3338 dp
= _DIRENT_NEXT(dp
);
3343 if (cpos
>= cend
|| ncookies
== 0) {
3350 * Probe one of the directory entries to see if the filesystem
3353 if (VFS_VGET(vp
->v_mount
, vp
, dp
->d_ino
, &nvp
) == EOPNOTSUPP
) {
3354 error
= NFSERR_NOTSUPP
;
3357 kfree((caddr_t
)cookies
, M_TEMP
);
3358 kfree((caddr_t
)rbuf
, M_TEMP
);
3359 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
3360 NFSX_V3POSTOPATTR
, &error
));
3361 nfsm_srvpostop_attr(&info
, nfsd
, getret
, &at
);
3370 dirlen
= len
= NFSX_V3POSTOPATTR
+ NFSX_V3COOKIEVERF
+
3372 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
, cnt
, &error
));
3373 nfsm_srvpostop_attr(&info
, nfsd
, getret
, &at
);
3374 tl
= nfsm_build(&info
, 2 * NFSX_UNSIGNED
);
3375 txdr_hyper(at
.va_filerev
, tl
);
3376 mp1
= mp2
= info
.mb
;
3378 be
= bp
+ M_TRAILINGSPACE(mp1
);
3380 /* Loop through the records and build reply */
3381 while (cpos
< cend
&& ncookies
> 0) {
3382 if (dp
->d_ino
!= 0 && dp
->d_type
!= DT_WHT
) {
3383 nlen
= dp
->d_namlen
;
3384 rem
= nfsm_rndup(nlen
) - nlen
;
3387 * For readdir_and_lookup get the vnode using
3390 if (VFS_VGET(vp
->v_mount
, vp
, dp
->d_ino
, &nvp
))
3392 bzero((caddr_t
)nfhp
, NFSX_V3FH
);
3393 nfhp
->fh_fsid
= fhp
->fh_fsid
;
3394 if (VFS_VPTOFH(nvp
, &nfhp
->fh_fid
)) {
3399 if (VOP_GETATTR(nvp
, vap
)) {
3408 * If either the dircount or maxcount will be
3409 * exceeded, get out now. Both of these lengths
3410 * are calculated conservatively, including all
3413 len
+= (8 * NFSX_UNSIGNED
+ nlen
+ rem
+ NFSX_V3FH
+
3415 dirlen
+= (6 * NFSX_UNSIGNED
+ nlen
+ rem
);
3416 if (len
> cnt
|| dirlen
> fullsiz
) {
3422 * Build the directory record xdr from
3425 fp
= (struct nfs_fattr
*)&fl
.fl_fattr
;
3426 nfsm_srvfattr(nfsd
, vap
, fp
);
3427 fl
.fl_off
.nfsuquad
[0] = txdr_unsigned(*cookiep
>> 32);
3428 fl
.fl_off
.nfsuquad
[1] = txdr_unsigned(*cookiep
);
3429 fl
.fl_postopok
= nfs_true
;
3430 fl
.fl_fhok
= nfs_true
;
3431 fl
.fl_fhsize
= txdr_unsigned(NFSX_V3FH
);
3433 tl
= nfsm_clget(&info
, mp1
, mp2
, bp
, be
);
3435 bp
+= NFSX_UNSIGNED
;
3436 tl
= nfsm_clget(&info
, mp1
, mp2
, bp
, be
);
3437 *tl
= txdr_unsigned(dp
->d_ino
>> 32);
3438 bp
+= NFSX_UNSIGNED
;
3439 tl
= nfsm_clget(&info
, mp1
, mp2
, bp
, be
);
3440 *tl
= txdr_unsigned(dp
->d_ino
);
3441 bp
+= NFSX_UNSIGNED
;
3442 tl
= nfsm_clget(&info
, mp1
, mp2
, bp
, be
);
3443 *tl
= txdr_unsigned(nlen
);
3444 bp
+= NFSX_UNSIGNED
;
3446 /* And loop around copying the name */
3450 tl
= nfsm_clget(&info
, mp1
, mp2
, bp
, be
);
3451 if ((bp
+ xfer
) > be
)
3455 bcopy(cp
, bp
, tsiz
);
3460 /* And null pad to a int32_t boundary */
3461 for (i
= 0; i
< rem
; i
++)
3465 * Now copy the flrep structure out.
3467 xfer
= sizeof (struct flrep
);
3470 tl
= nfsm_clget(&info
, mp1
, mp2
, bp
, be
);
3471 if ((bp
+ xfer
) > be
)
3475 bcopy(cp
, bp
, tsiz
);
3482 dp
= _DIRENT_NEXT(dp
);
3489 tl
= nfsm_clget(&info
, mp1
, mp2
, bp
, be
);
3491 bp
+= NFSX_UNSIGNED
;
3492 tl
= nfsm_clget(&info
, mp1
, mp2
, bp
, be
);
3497 bp
+= NFSX_UNSIGNED
;
3498 if (mp1
!= info
.mb
) {
3500 mp1
->m_len
= bp
- mtod(mp1
, caddr_t
);
3502 mp1
->m_len
+= bp
- info
.bpos
;
3503 FREE((caddr_t
)cookies
, M_TEMP
);
3504 FREE((caddr_t
)rbuf
, M_TEMP
);
3513 * nfs commit service
3516 nfsrv_commit(struct nfsrv_descript
*nfsd
, struct nfssvc_sock
*slp
,
3517 struct thread
*td
, struct mbuf
**mrq
)
3519 struct sockaddr
*nam
= nfsd
->nd_nam
;
3520 struct ucred
*cred
= &nfsd
->nd_cr
;
3521 struct vattr bfor
, aft
;
3522 struct vnode
*vp
= NULL
;
3523 struct mount
*mp
= NULL
;
3527 int error
= 0, rdonly
, for_ret
= 1, aft_ret
= 1, cnt
;
3529 struct nfsm_info info
;
3531 info
.mrep
= nfsd
->nd_mrep
;
3533 info
.md
= nfsd
->nd_md
;
3534 info
.dpos
= nfsd
->nd_dpos
;
3536 nfsdbprintf(("%s %d\n", __FILE__
, __LINE__
));
3537 fhp
= &nfh
.fh_generic
;
3538 NEGREPLYOUT(nfsm_srvmtofh(&info
, nfsd
, fhp
, &error
));
3539 NULLOUT(tl
= nfsm_dissect(&info
, 3 * NFSX_UNSIGNED
));
3542 * XXX At this time VOP_FSYNC() does not accept offset and byte
3543 * count parameters, so these arguments are useless (someday maybe).
3545 off
= fxdr_hyper(tl
);
3547 cnt
= fxdr_unsigned(int, *tl
);
3548 error
= nfsrv_fhtovp(fhp
, 1, &mp
, &vp
, cred
, slp
, nam
,
3549 &rdonly
, (nfsd
->nd_flag
& ND_KERBAUTH
), TRUE
);
3551 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
3552 2 * NFSX_UNSIGNED
, &error
));
3553 nfsm_srvwcc_data(&info
, nfsd
, for_ret
, &bfor
,
3558 for_ret
= VOP_GETATTR(vp
, &bfor
);
3560 if (cnt
> MAX_COMMIT_COUNT
) {
3562 * Give up and do the whole thing
3565 (vp
->v_object
->flags
& OBJ_MIGHTBEDIRTY
)) {
3566 vm_object_page_clean(vp
->v_object
, 0, 0, OBJPC_SYNC
);
3568 error
= VOP_FSYNC(vp
, MNT_WAIT
, 0);
3571 * Locate and synchronously write any buffers that fall
3572 * into the requested range. Note: we are assuming that
3573 * f_iosize is a power of 2.
3575 int iosize
= vp
->v_mount
->mnt_stat
.f_iosize
;
3576 int iomask
= iosize
- 1;
3580 * Align to iosize boundry, super-align to page boundry.
3583 cnt
+= off
& iomask
;
3584 off
&= ~(u_quad_t
)iomask
;
3586 if (off
& PAGE_MASK
) {
3587 cnt
+= off
& PAGE_MASK
;
3588 off
&= ~(u_quad_t
)PAGE_MASK
;
3593 (vp
->v_object
->flags
& OBJ_MIGHTBEDIRTY
)) {
3594 vm_object_page_clean(vp
->v_object
, off
/ PAGE_SIZE
, (cnt
+ PAGE_MASK
) / PAGE_SIZE
, OBJPC_SYNC
);
3602 * If we have a buffer and it is marked B_DELWRI we
3603 * have to lock and write it. Otherwise the prior
3604 * write is assumed to have already been committed.
3606 if ((bp
= findblk(vp
, loffset
, FINDBLK_TEST
)) != NULL
) {
3607 if (bp
->b_flags
& B_DELWRI
)
3608 bp
= findblk(vp
, loffset
, 0);
3613 if (bp
->b_flags
& B_DELWRI
) {
3630 aft_ret
= VOP_GETATTR(vp
, &aft
);
3633 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
3634 NFSX_V3WCCDATA
+ NFSX_V3WRITEVERF
,
3636 nfsm_srvwcc_data(&info
, nfsd
, for_ret
, &bfor
,
3639 tl
= nfsm_build(&info
, NFSX_V3WRITEVERF
);
3640 if (nfsver
.tv_sec
== 0)
3642 *tl
++ = txdr_unsigned(nfsver
.tv_sec
);
3643 *tl
= txdr_unsigned(nfsver
.tv_nsec
/ 1000);
3655 * nfs statfs service
3658 nfsrv_statfs(struct nfsrv_descript
*nfsd
, struct nfssvc_sock
*slp
,
3659 struct thread
*td
, struct mbuf
**mrq
)
3661 struct sockaddr
*nam
= nfsd
->nd_nam
;
3662 struct ucred
*cred
= &nfsd
->nd_cr
;
3664 struct nfs_statfs
*sfp
;
3665 int error
= 0, rdonly
, getret
= 1;
3666 struct vnode
*vp
= NULL
;
3667 struct mount
*mp
= NULL
;
3671 struct statfs statfs
;
3673 struct nfsm_info info
;
3675 info
.mrep
= nfsd
->nd_mrep
;
3677 info
.md
= nfsd
->nd_md
;
3678 info
.dpos
= nfsd
->nd_dpos
;
3679 info
.v3
= (nfsd
->nd_flag
& ND_NFSV3
);
3681 nfsdbprintf(("%s %d\n", __FILE__
, __LINE__
));
3682 fhp
= &nfh
.fh_generic
;
3683 NEGREPLYOUT(nfsm_srvmtofh(&info
, nfsd
, fhp
, &error
));
3684 error
= nfsrv_fhtovp(fhp
, 1, &mp
, &vp
, cred
, slp
, nam
,
3685 &rdonly
, (nfsd
->nd_flag
& ND_KERBAUTH
), TRUE
);
3687 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
, NFSX_UNSIGNED
, &error
));
3688 nfsm_srvpostop_attr(&info
, nfsd
, getret
, &at
);
3693 error
= VFS_STATFS(vp
->v_mount
, sf
, proc0
.p_ucred
);
3694 getret
= VOP_GETATTR(vp
, &at
);
3697 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
3698 NFSX_POSTOPATTR(info
.v3
) + NFSX_STATFS(info
.v3
),
3701 nfsm_srvpostop_attr(&info
, nfsd
, getret
, &at
);
3706 sfp
= nfsm_build(&info
, NFSX_STATFS(info
.v3
));
3708 tval
= (u_quad_t
)sf
->f_blocks
;
3709 tval
*= (u_quad_t
)sf
->f_bsize
;
3710 txdr_hyper(tval
, &sfp
->sf_tbytes
);
3711 tval
= (u_quad_t
)sf
->f_bfree
;
3712 tval
*= (u_quad_t
)sf
->f_bsize
;
3713 txdr_hyper(tval
, &sfp
->sf_fbytes
);
3714 tval
= (u_quad_t
)sf
->f_bavail
;
3715 tval
*= (u_quad_t
)sf
->f_bsize
;
3716 txdr_hyper(tval
, &sfp
->sf_abytes
);
3717 sfp
->sf_tfiles
.nfsuquad
[0] = 0;
3718 sfp
->sf_tfiles
.nfsuquad
[1] = txdr_unsigned(sf
->f_files
);
3719 sfp
->sf_ffiles
.nfsuquad
[0] = 0;
3720 sfp
->sf_ffiles
.nfsuquad
[1] = txdr_unsigned(sf
->f_ffree
);
3721 sfp
->sf_afiles
.nfsuquad
[0] = 0;
3722 sfp
->sf_afiles
.nfsuquad
[1] = txdr_unsigned(sf
->f_ffree
);
3723 sfp
->sf_invarsec
= 0;
3725 sfp
->sf_tsize
= txdr_unsigned(NFS_MAXDGRAMDATA
);
3726 sfp
->sf_bsize
= txdr_unsigned(sf
->f_bsize
);
3727 sfp
->sf_blocks
= txdr_unsigned(sf
->f_blocks
);
3728 sfp
->sf_bfree
= txdr_unsigned(sf
->f_bfree
);
3729 sfp
->sf_bavail
= txdr_unsigned(sf
->f_bavail
);
3739 * nfs fsinfo service
3742 nfsrv_fsinfo(struct nfsrv_descript
*nfsd
, struct nfssvc_sock
*slp
,
3743 struct thread
*td
, struct mbuf
**mrq
)
3745 struct sockaddr
*nam
= nfsd
->nd_nam
;
3746 struct ucred
*cred
= &nfsd
->nd_cr
;
3747 struct nfsv3_fsinfo
*sip
;
3748 int error
= 0, rdonly
, getret
= 1, pref
;
3749 struct vnode
*vp
= NULL
;
3750 struct mount
*mp
= NULL
;
3756 struct nfsm_info info
;
3758 info
.mrep
= nfsd
->nd_mrep
;
3760 info
.md
= nfsd
->nd_md
;
3761 info
.dpos
= nfsd
->nd_dpos
;
3763 nfsdbprintf(("%s %d\n", __FILE__
, __LINE__
));
3764 fhp
= &nfh
.fh_generic
;
3765 NEGREPLYOUT(nfsm_srvmtofh(&info
, nfsd
, fhp
, &error
));
3766 error
= nfsrv_fhtovp(fhp
, 1, &mp
, &vp
, cred
, slp
, nam
,
3767 &rdonly
, (nfsd
->nd_flag
& ND_KERBAUTH
), TRUE
);
3769 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
, NFSX_UNSIGNED
, &error
));
3770 nfsm_srvpostop_attr(&info
, nfsd
, getret
, &at
);
3775 /* XXX Try to make a guess on the max file size. */
3776 VFS_STATFS(vp
->v_mount
, &sb
, proc0
.p_ucred
);
3777 maxfsize
= (u_quad_t
)0x80000000 * sb
.f_bsize
- 1;
3779 getret
= VOP_GETATTR(vp
, &at
);
3782 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
3783 NFSX_V3POSTOPATTR
+ NFSX_V3FSINFO
, &error
));
3784 nfsm_srvpostop_attr(&info
, nfsd
, getret
, &at
);
3785 sip
= nfsm_build(&info
, NFSX_V3FSINFO
);
3789 * There should be file system VFS OP(s) to get this information.
3790 * For now, assume ufs.
3792 if (slp
->ns_so
->so_type
== SOCK_DGRAM
)
3793 pref
= NFS_MAXDGRAMDATA
;
3796 sip
->fs_rtmax
= txdr_unsigned(NFS_MAXDATA
);
3797 sip
->fs_rtpref
= txdr_unsigned(pref
);
3798 sip
->fs_rtmult
= txdr_unsigned(NFS_FABLKSIZE
);
3799 sip
->fs_wtmax
= txdr_unsigned(NFS_MAXDATA
);
3800 sip
->fs_wtpref
= txdr_unsigned(pref
);
3801 sip
->fs_wtmult
= txdr_unsigned(NFS_FABLKSIZE
);
3802 sip
->fs_dtpref
= txdr_unsigned(pref
);
3803 txdr_hyper(maxfsize
, &sip
->fs_maxfilesize
);
3804 sip
->fs_timedelta
.nfsv3_sec
= 0;
3805 sip
->fs_timedelta
.nfsv3_nsec
= txdr_unsigned(1);
3806 sip
->fs_properties
= txdr_unsigned(NFSV3FSINFO_LINK
|
3807 NFSV3FSINFO_SYMLINK
| NFSV3FSINFO_HOMOGENEOUS
|
3808 NFSV3FSINFO_CANSETTIME
);
3817 * nfs pathconf service
3820 nfsrv_pathconf(struct nfsrv_descript
*nfsd
, struct nfssvc_sock
*slp
,
3821 struct thread
*td
, struct mbuf
**mrq
)
3823 struct sockaddr
*nam
= nfsd
->nd_nam
;
3824 struct ucred
*cred
= &nfsd
->nd_cr
;
3825 struct nfsv3_pathconf
*pc
;
3826 int error
= 0, rdonly
, getret
= 1;
3827 register_t linkmax
, namemax
, chownres
, notrunc
;
3828 struct vnode
*vp
= NULL
;
3829 struct mount
*mp
= NULL
;
3833 struct nfsm_info info
;
3835 info
.mrep
= nfsd
->nd_mrep
;
3837 info
.md
= nfsd
->nd_md
;
3838 info
.dpos
= nfsd
->nd_dpos
;
3840 nfsdbprintf(("%s %d\n", __FILE__
, __LINE__
));
3841 fhp
= &nfh
.fh_generic
;
3842 NEGREPLYOUT(nfsm_srvmtofh(&info
, nfsd
, fhp
, &error
));
3843 error
= nfsrv_fhtovp(fhp
, 1, &mp
, &vp
, cred
, slp
, nam
,
3844 &rdonly
, (nfsd
->nd_flag
& ND_KERBAUTH
), TRUE
);
3846 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
, NFSX_UNSIGNED
, &error
));
3847 nfsm_srvpostop_attr(&info
, nfsd
, getret
, &at
);
3851 error
= VOP_PATHCONF(vp
, _PC_LINK_MAX
, &linkmax
);
3853 error
= VOP_PATHCONF(vp
, _PC_NAME_MAX
, &namemax
);
3855 error
= VOP_PATHCONF(vp
, _PC_CHOWN_RESTRICTED
, &chownres
);
3857 error
= VOP_PATHCONF(vp
, _PC_NO_TRUNC
, ¬runc
);
3858 getret
= VOP_GETATTR(vp
, &at
);
3861 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
,
3862 NFSX_V3POSTOPATTR
+ NFSX_V3PATHCONF
,
3864 nfsm_srvpostop_attr(&info
, nfsd
, getret
, &at
);
3869 pc
= nfsm_build(&info
, NFSX_V3PATHCONF
);
3871 pc
->pc_linkmax
= txdr_unsigned(linkmax
);
3872 pc
->pc_namemax
= txdr_unsigned(namemax
);
3873 pc
->pc_notrunc
= txdr_unsigned(notrunc
);
3874 pc
->pc_chownrestricted
= txdr_unsigned(chownres
);
3877 * These should probably be supported by VOP_PATHCONF(), but
3878 * until msdosfs is exportable (why would you want to?), the
3879 * Unix defaults should be ok.
3881 pc
->pc_caseinsensitive
= nfs_false
;
3882 pc
->pc_casepreserving
= nfs_true
;
3891 * Null operation, used by clients to ping server
3895 nfsrv_null(struct nfsrv_descript
*nfsd
, struct nfssvc_sock
*slp
,
3896 struct thread
*td
, struct mbuf
**mrq
)
3898 struct nfsm_info info
;
3899 int error
= NFSERR_RETVOID
;
3901 info
.mrep
= nfsd
->nd_mrep
;
3904 nfsdbprintf(("%s %d\n", __FILE__
, __LINE__
));
3905 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
, 0, &error
));
3912 * No operation, used for obsolete procedures
3916 nfsrv_noop(struct nfsrv_descript
*nfsd
, struct nfssvc_sock
*slp
,
3917 struct thread
*td
, struct mbuf
**mrq
)
3919 struct nfsm_info info
;
3922 info
.mrep
= nfsd
->nd_mrep
;
3925 nfsdbprintf(("%s %d\n", __FILE__
, __LINE__
));
3926 if (nfsd
->nd_repstat
)
3927 error
= nfsd
->nd_repstat
;
3929 error
= EPROCUNAVAIL
;
3930 NEGKEEPOUT(nfsm_reply(&info
, nfsd
, slp
, 0, &error
));
3938 * Perform access checking for vnodes obtained from file handles that would
3939 * refer to files already opened by a Unix client. You cannot just use
3940 * vn_writechk() and VOP_ACCESS() for two reasons.
3941 * 1 - You must check for exported rdonly as well as MNT_RDONLY for the write case
3942 * 2 - The owner is to be given access irrespective of mode bits for some
3943 * operations, so that processes that chmod after opening a file don't
3944 * break. I don't like this because it opens a security hole, but since
3945 * the nfs server opens a security hole the size of a barn door anyhow,
3948 * The exception to rule 2 is EPERM. If a file is IMMUTABLE, VOP_ACCESS()
3949 * will return EPERM instead of EACCESS. EPERM is always an error.
3952 nfsrv_access(struct mount
*mp
, struct vnode
*vp
, int flags
, struct ucred
*cred
,
3953 int rdonly
, struct thread
*td
, int override
)
3958 nfsdbprintf(("%s %d\n", __FILE__
, __LINE__
));
3959 if (flags
& VWRITE
) {
3960 /* Just vn_writechk() changed to check rdonly */
3962 * Disallow write attempts on read-only file systems;
3963 * unless the file is a socket or a block or character
3964 * device resident on the file system.
3967 ((mp
->mnt_flag
| vp
->v_mount
->mnt_flag
) & MNT_RDONLY
)) {
3968 switch (vp
->v_type
) {
3978 * If there's shared text associated with
3979 * the inode, we can't allow writing.
3981 if (vp
->v_flag
& VTEXT
)
3984 error
= VOP_GETATTR(vp
, &vattr
);
3987 error
= VOP_ACCESS(vp
, flags
, cred
); /* XXX ruid/rgid vs uid/gid */
3989 * Allow certain operations for the owner (reads and writes
3990 * on files that are already open).
3992 if (override
&& error
== EACCES
&& cred
->cr_uid
== vattr
.va_uid
)
3996 #endif /* NFS_NOSERVER */